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Bug#846882:



Hello,

I'm using debian jessie with some backports too and I think I am
affected by the same underlying issue, I'm not quite sure if "change
linearly without light off" means what I'll describe as "flickering".
I am using an IBM Lenovo ThinkPad T61 and gnome 3.14.

When I upgraded xserver-xorg-video-intel from
2:2.99.917+git20160706-1~bpo8+1 to 2:2.99.917+git20161105-1~bpo8+1 I
noticed a "flickerig" in the backlight brightness whenever I changed
it via the hot keys. It is still occuring with
2:2.99.917+git20161206-1~bpo8+1.

As the upstream bug report has the staus NEEDINFO and it is requested
to "reproduce using *only*
/sys/class/backlight/intel_backlight/brigthness directly" I played
arround with different methods of brightness adjustion.


First of all a better description of what I mean with "flickering": on
each key press of the hot key the brightness is adjusted, however
there is a short period (maybe 1/10th of a second) where the backlight
is set to some other level. This is happening in both directions, but
not when the minimum or maximum is reached.


When I write values to either
/sys/class/backlight/intel_backlight/brigthness or
/sys/class/backlight/acpi_video0/brightness this flickering doesn't
occur. Also, when I fade the brightness in the gnome menu (upper right
corner for me, below the volume settings) it changes perfectly without
flickering. This lets me assume that is not a (pure) upstream issue,
but more likely an issue with the hot key management and its
interaction with xserver-xorg-video-intel (I assume that happens
somewhere else and no in xserver-xorg-video-intel, doesn't it?).
Therefore I share this findings here and not in the upstream bug. If
you'd like I can also post it there.

----

1. tune down brightness in gnome and hit brightnessdown key multiple
times to get to a dark state

root@my-host:~# cat /sys/class/backlight/acpi_video0/brightness
0
root@my-host:~# cat /sys/class/backlight/intel_backlight/brightness
0


2. tune brightness up to maximum in the gnome menu (backlight changes
seamlessly to the brightest state)

root@my-host:~# cat /sys/class/backlight/acpi_video0/brightness
0
root@my-host:~# cat /sys/class/backlight/intel_backlight/brightness
12056655


3. hit brightnessdown key few times (extreme flickering: backlight is
always shortly dark)

root@my-host:~# cat /sys/class/backlight/acpi_video0/brightness
0
root@my-host:~# cat /sys/class/backlight/intel_backlight/brightness
9042444


4. hit brightnessup key few times (less extreme flickering)

root@my-host:~# cat /sys/class/backlight/acpi_video0/brightness
2
root@my-host:~# cat /sys/class/backlight/intel_backlight/brightness
10248157


5. go back to default level, as in 1.

root@my-host:~# cat /sys/class/backlight/acpi_video0/brightness
0
root@my-host:~# cat /sys/class/backlight/intel_backlight/brightness
0


6. tune brightness up via echo to intel_backlight (backlight is in its
brightest state)

root@my-host:~# echo 12056655 > /sys/class/backlight/intel_backlight/brightness
root@my-host:~# cat /sys/class/backlight/acpi_video0/brightness
0
root@my-host:~# cat /sys/class/backlight/intel_backlight/brightness
12056655


7. hit brightnessdown key once (backlight is immediately dark)

root@my-host:~# cat /sys/class/backlight/acpi_video0/brightness
0
root@my-host:~# cat /sys/class/backlight/intel_backlight/brightness
0




8. tune brightness up via echo to acpi_video0 (backlight is in its
brightest state)

root@my-host:~# cat /sys/class/backlight/acpi_video0/brightness
15
root@my-host:~# cat /sys/class/backlight/intel_backlight/brightness
12056655



9. hit brightnessdown key once (backlight is immediately dark)


root@my-host:~# cat /sys/class/backlight/acpi_video0/brightness
14
root@my-host:~# cat /sys/class/backlight/intel_backlight/brightness
0


----

So the problem seems that the brightness levels are inconsistently
changed by the hot keys.

I noticed https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=801348#12
and added Option "Backlight" "intel_backlight" to the Device Section
in xorg.conf, however that made no difference.

Attachment: dmesg
Description: Binary data

[    58.549] 
X.Org X Server 1.16.4
Release Date: 2014-12-20
[    58.550] X Protocol Version 11, Revision 0
[    58.550] Build Operating System: Linux 3.16.0-4-amd64 x86_64 Debian
[    58.550] Current Operating System: Linux my-host 4.8.0-0.bpo.2-amd64 #1 SMP Debian 4.8.15-2~bpo8+2 (2017-01-17) x86_64
[    58.550] Kernel command line: BOOT_IMAGE=/boot/vmlinuz-4.8.0-0.bpo.2-amd64 root=UUID=401764f9-f506-4c34-8b8e-ec62d39ec231 ro quiet
[    58.550] Build Date: 11 February 2015  12:32:02AM
[    58.550] xorg-server 2:1.16.4-1 (http://www.debian.org/support) 
[    58.550] Current version of pixman: 0.32.6
[    58.550] 	Before reporting problems, check http://wiki.x.org
	to make sure that you have the latest version.
[    58.550] Markers: (--) probed, (**) from config file, (==) default setting,
	(++) from command line, (!!) notice, (II) informational,
	(WW) warning, (EE) error, (NI) not implemented, (??) unknown.
[    58.550] (==) Log file: "/var/log/Xorg.0.log", Time: Wed Jan 25 23:28:58 2017
[    58.656] (==) Using config file: "/etc/X11/xorg.conf"
[    58.656] (==) Using system config directory "/usr/share/X11/xorg.conf.d"
[    60.914] (==) ServerLayout "X.org Configured"
[    60.914] (**) |-->Screen "Screen0" (0)
[    60.914] (**) |   |-->Monitor "Monitor0"
[    61.066] (**) |   |-->Device "Card0"
[    61.066] (**) |-->Screen "Screen1" (1)
[    61.066] (**) |   |-->Monitor "Monitor1"
[    61.066] (**) |   |-->Device "Card1"
[    61.066] (**) |-->Input Device "Mouse0"
[    61.066] (**) |-->Input Device "Keyboard0"
[    61.066] (==) Automatically adding devices
[    61.066] (==) Automatically enabling devices
[    61.066] (==) Automatically adding GPU devices
[    61.513] (WW) The directory "/usr/share/fonts/X11/cyrillic" does not exist.
[    61.513] 	Entry deleted from font path.
[    61.617] (WW) The directory "/usr/share/fonts/X11/cyrillic" does not exist.
[    61.617] 	Entry deleted from font path.
[    61.617] (**) FontPath set to:
	/usr/share/fonts/X11/misc,
	/usr/share/fonts/X11/100dpi/:unscaled,
	/usr/share/fonts/X11/75dpi/:unscaled,
	/usr/share/fonts/X11/Type1,
	/usr/share/fonts/X11/100dpi,
	/usr/share/fonts/X11/75dpi,
	built-ins,
	/usr/share/fonts/X11/misc,
	/usr/share/fonts/X11/100dpi/:unscaled,
	/usr/share/fonts/X11/75dpi/:unscaled,
	/usr/share/fonts/X11/Type1,
	/usr/share/fonts/X11/100dpi,
	/usr/share/fonts/X11/75dpi,
	built-ins
[    61.617] (**) ModulePath set to "/usr/lib/xorg/modules"
[    61.617] (WW) Hotplugging is on, devices using drivers 'kbd', 'mouse' or 'vmmouse' will be disabled.
[    61.617] (WW) Disabling Mouse0
[    61.617] (WW) Disabling Keyboard0
[    61.696] (II) Loader magic: 0x55ab12900d80
[    61.696] (II) Module ABI versions:
[    61.696] 	X.Org ANSI C Emulation: 0.4
[    61.696] 	X.Org Video Driver: 18.0
[    61.696] 	X.Org XInput driver : 21.0
[    61.696] 	X.Org Server Extension : 8.0
[    61.696] (II) xfree86: Adding drm device (/dev/dri/card0)
[    61.703] (--) PCI:*(0:0:2:0) 8086:2a02:17aa:20b5 rev 12, Mem @ 0xf8100000/1048576, 0xe0000000/268435456, I/O @ 0x00001800/8, BIOS @ 0x????????/131072
[    61.703] (--) PCI: (0:0:2:1) 8086:2a03:17aa:20b5 rev 12, Mem @ 0xf8200000/1048576
[    61.704] (II) "glx" will be loaded. This was enabled by default and also specified in the config file.
[    61.704] (II) LoadModule: "glx"
[    61.704] (II) Loading /usr/lib/xorg/modules/extensions/libglx.so
[    61.888] (II) Module glx: vendor="X.Org Foundation"
[    61.888] 	compiled for 1.16.4, module version = 1.0.0
[    61.888] 	ABI class: X.Org Server Extension, version 8.0
[    61.888] (==) AIGLX enabled
[    61.888] (II) LoadModule: "intel"
[    61.888] (II) Loading /usr/lib/xorg/modules/drivers/intel_drv.so
[    62.092] (II) Module intel: vendor="X.Org Foundation"
[    62.092] 	compiled for 1.16.4, module version = 2.99.917
[    62.092] 	Module class: X.Org Video Driver
[    62.092] 	ABI class: X.Org Video Driver, version 18.0
[    62.093] (II) intel: Driver for Intel(R) Integrated Graphics Chipsets:
	i810, i810-dc100, i810e, i815, i830M, 845G, 854, 852GM/855GM, 865G,
	915G, E7221 (i915), 915GM, 945G, 945GM, 945GME, Pineview GM,
	Pineview G, 965G, G35, 965Q, 946GZ, 965GM, 965GME/GLE, G33, Q35, Q33,
	GM45, 4 Series, G45/G43, Q45/Q43, G41, B43
[    62.093] (II) intel: Driver for Intel(R) HD Graphics
[    62.093] (II) intel: Driver for Intel(R) Iris(TM) Graphics
[    62.093] (II) intel: Driver for Intel(R) Iris(TM) Pro Graphics
[    62.093] (++) using VT number 7

[    62.126] (II) intel(0): Using Kernel Mode Setting driver: i915, version 1.6.0 20160711
[    62.126] (II) intel(0): SNA compiled: xserver-xorg-video-intel 2:2.99.917+git20161206-1~bpo8+1 (Vincent Cheng <vcheng@debian.org>)
[    62.126] (II) intel(0): SNA compiled for use with valgrind
[    62.127] (--) intel(0): Integrated Graphics Chipset: Intel(R) 965GM
[    62.127] (--) intel(0): CPU: x86-64, sse2, sse3, ssse3; using a maximum of 2 threads
[    62.127] (==) intel(0): Depth 24, (--) framebuffer bpp 32
[    62.127] (==) intel(0): RGB weight 888
[    62.127] (==) intel(0): Default visual is TrueColor
[    62.128] (**) intel(0): Option "Backlight" "intel_backlight"
[    62.181] (II) intel(0): Output LVDS1 using monitor section Monitor0
[    62.200] (**) intel(0): Found backlight control interface intel_backlight (type 'raw') for output LVDS1
[    62.200] (II) intel(0): Enabled output LVDS1
[    62.200] (II) intel(0): Output VGA1 has no monitor section
[    62.200] (II) intel(0): Enabled output VGA1
[    62.200] (II) intel(0): Output DVI1 has no monitor section
[    62.200] (II) intel(0): Enabled output DVI1
[    62.200] (--) intel(0): Using a maximum size of 256x256 for hardware cursors
[    62.200] (II) intel(0): Output VIRTUAL1 has no monitor section
[    62.200] (II) intel(0): Enabled output VIRTUAL1
[    62.200] (--) intel(0): Output LVDS1 using initial mode 1024x768 on pipe 0
[    62.200] (--) intel(0): Output VGA1 using initial mode 1280x1024 on pipe 1
[    62.200] (==) intel(0): TearFree disabled
[    62.200] (==) intel(0): DPI set to (96, 96)
[    62.200] (II) Loading sub module "dri3"
[    62.200] (II) LoadModule: "dri3"
[    62.201] (II) Module "dri3" already built-in
[    62.201] (II) Loading sub module "dri2"
[    62.201] (II) LoadModule: "dri2"
[    62.201] (II) Module "dri2" already built-in
[    62.201] (II) Loading sub module "present"
[    62.201] (II) LoadModule: "present"
[    62.201] (II) Module "present" already built-in
[    62.201] (==) Depth 24 pixmap format is 32 bpp
[    62.523] (II) intel(0): SNA initialized with Broadwater (gen4) backend
[    62.523] (==) intel(0): Backing store enabled
[    62.523] (==) intel(0): Silken mouse enabled
[    62.818] (II) intel(0): HW Cursor enabled
[    62.818] (II) intel(0): RandR 1.2 enabled, ignore the following RandR disabled message.
[    62.824] (==) intel(0): DPMS enabled
[    62.824] (==) intel(0): Display hotplug detection enabled
[    62.824] (II) intel(0): [XvMC] i965_xvmc driver initialized.
[    62.824] (II) intel(0): [DRI2] Setup complete
[    62.824] (II) intel(0): [DRI2]   DRI driver: i965
[    62.824] (II) intel(0): [DRI2]   VDPAU driver: va_gl
[    62.824] (II) intel(0): direct rendering: DRI2 enabled
[    62.824] (II) intel(0): hardware support for Present enabled
[    62.824] (--) RandR disabled
[    62.834] (II) SELinux: Disabled on system
[    66.713] (II) AIGLX: enabled GLX_MESA_copy_sub_buffer
[    66.713] (II) AIGLX: enabled GLX_ARB_create_context
[    66.713] (II) AIGLX: enabled GLX_ARB_create_context_profile
[    66.713] (II) AIGLX: enabled GLX_EXT_create_context_es2_profile
[    66.713] (II) AIGLX: enabled GLX_INTEL_swap_event
[    66.713] (II) AIGLX: enabled GLX_SGI_swap_control and GLX_MESA_swap_control
[    66.713] (II) AIGLX: enabled GLX_EXT_framebuffer_sRGB
[    66.713] (II) AIGLX: enabled GLX_ARB_fbconfig_float
[    66.713] (II) AIGLX: GLX_EXT_texture_from_pixmap backed by buffer objects
[    66.713] (II) AIGLX: Loaded and initialized i965
[    66.713] (II) GLX: Initialized DRI2 GL provider for screen 0
[    66.764] (II) intel(0): switch to mode 1024x768@60.0 on LVDS1 using pipe 0, position (0, 0), rotation normal, reflection none
[    66.776] (II) intel(0): switch to mode 1280x1024@60.0 on VGA1 using pipe 1, position (0, 0), rotation normal, reflection none
[    66.784] (II) intel(0): Setting screen physical size to 338 x 270
[    68.430] (II) config/udev: Adding input device Power Button (/dev/input/event7)
[    68.430] (**) Power Button: Applying InputClass "evdev keyboard catchall"
[    68.430] (II) LoadModule: "evdev"
[    68.507] (II) Loading /usr/lib/xorg/modules/input/evdev_drv.so
[    68.508] (II) Module evdev: vendor="X.Org Foundation"
[    68.508] 	compiled for 1.16.0, module version = 2.9.0
[    68.508] 	Module class: X.Org XInput Driver
[    68.508] 	ABI class: X.Org XInput driver, version 21.0
[    68.508] (II) Using input driver 'evdev' for 'Power Button'
[    68.508] (**) Power Button: always reports core events
[    68.508] (**) evdev: Power Button: Device: "/dev/input/event7"
[    68.508] (--) evdev: Power Button: Vendor 0 Product 0x1
[    68.508] (--) evdev: Power Button: Found keys
[    68.508] (II) evdev: Power Button: Configuring as keyboard
[    68.508] (**) Option "config_info" "udev:/sys/devices/LNXSYSTM:00/LNXPWRBN:00/input/input8/event7"
[    68.508] (II) XINPUT: Adding extended input device "Power Button" (type: KEYBOARD, id 6)
[    68.508] (**) Option "xkb_rules" "evdev"
[    68.508] (**) Option "xkb_model" "pc104"
[    68.508] (**) Option "xkb_layout" "de"
[    68.508] (**) Option "xkb_variant" "nodeadkeys"
[    68.535] (II) config/udev: Adding input device Video Bus (/dev/input/event9)
[    68.535] (**) Video Bus: Applying InputClass "evdev keyboard catchall"
[    68.535] (II) Using input driver 'evdev' for 'Video Bus'
[    68.535] (**) Video Bus: always reports core events
[    68.535] (**) evdev: Video Bus: Device: "/dev/input/event9"
[    68.535] (--) evdev: Video Bus: Vendor 0 Product 0x6
[    68.535] (--) evdev: Video Bus: Found keys
[    68.535] (II) evdev: Video Bus: Configuring as keyboard
[    68.535] (**) Option "config_info" "udev:/sys/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A08:00/LNXVIDEO:00/input/input10/event9"
[    68.535] (II) XINPUT: Adding extended input device "Video Bus" (type: KEYBOARD, id 7)
[    68.535] (**) Option "xkb_rules" "evdev"
[    68.535] (**) Option "xkb_model" "pc104"
[    68.535] (**) Option "xkb_layout" "de"
[    68.535] (**) Option "xkb_variant" "nodeadkeys"
[    68.536] (II) config/udev: Adding input device Lid Switch (/dev/input/event5)
[    68.536] (II) No input driver specified, ignoring this device.
[    68.536] (II) This device may have been added with another device file.
[    68.536] (II) config/udev: Adding input device Sleep Button (/dev/input/event6)
[    68.536] (**) Sleep Button: Applying InputClass "evdev keyboard catchall"
[    68.536] (II) Using input driver 'evdev' for 'Sleep Button'
[    68.536] (**) Sleep Button: always reports core events
[    68.536] (**) evdev: Sleep Button: Device: "/dev/input/event6"
[    68.537] (--) evdev: Sleep Button: Vendor 0 Product 0x3
[    68.537] (--) evdev: Sleep Button: Found keys
[    68.537] (II) evdev: Sleep Button: Configuring as keyboard
[    68.537] (**) Option "config_info" "udev:/sys/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0C0E:00/input/input7/event6"
[    68.537] (II) XINPUT: Adding extended input device "Sleep Button" (type: KEYBOARD, id 8)
[    68.537] (**) Option "xkb_rules" "evdev"
[    68.537] (**) Option "xkb_model" "pc104"
[    68.537] (**) Option "xkb_layout" "de"
[    68.537] (**) Option "xkb_variant" "nodeadkeys"
[    68.538] (II) config/udev: Adding input device DELL Dell USB Entry Keyboard (/dev/input/event2)
[    68.538] (**) DELL Dell USB Entry Keyboard: Applying InputClass "evdev keyboard catchall"
[    68.538] (II) Using input driver 'evdev' for 'DELL Dell USB Entry Keyboard'
[    68.538] (**) DELL Dell USB Entry Keyboard: always reports core events
[    68.538] (**) evdev: DELL Dell USB Entry Keyboard: Device: "/dev/input/event2"
[    68.538] (--) evdev: DELL Dell USB Entry Keyboard: Vendor 0x413c Product 0x2107
[    68.538] (--) evdev: DELL Dell USB Entry Keyboard: Found keys
[    68.538] (II) evdev: DELL Dell USB Entry Keyboard: Configuring as keyboard
[    68.538] (**) Option "config_info" "udev:/sys/devices/pci0000:00/0000:00:1a.1/usb2/2-1/2-1:1.0/0003:413C:2107.0005/input/input4/event2"
[    68.538] (II) XINPUT: Adding extended input device "DELL Dell USB Entry Keyboard" (type: KEYBOARD, id 9)
[    68.538] (**) Option "xkb_rules" "evdev"
[    68.538] (**) Option "xkb_model" "pc104"
[    68.538] (**) Option "xkb_layout" "de"
[    68.538] (**) Option "xkb_variant" "nodeadkeys"
[    68.539] (II) config/udev: Adding input device HDA Intel Mic (/dev/input/event11)
[    68.539] (II) No input driver specified, ignoring this device.
[    68.539] (II) This device may have been added with another device file.
[    68.539] (II) config/udev: Adding input device HDA Intel Dock Mic (/dev/input/event12)
[    68.539] (II) No input driver specified, ignoring this device.
[    68.539] (II) This device may have been added with another device file.
[    68.539] (II) config/udev: Adding input device HDA Intel Headphone (/dev/input/event13)
[    68.539] (II) No input driver specified, ignoring this device.
[    68.539] (II) This device may have been added with another device file.
[    68.540] (II) config/udev: Adding input device Logitech M510 (/dev/input/event3)
[    68.540] (**) Logitech M510: Applying InputClass "evdev pointer catchall"
[    68.540] (II) Using input driver 'evdev' for 'Logitech M510'
[    68.540] (**) Logitech M510: always reports core events
[    68.540] (**) evdev: Logitech M510: Device: "/dev/input/event3"
[    68.540] (--) evdev: Logitech M510: Vendor 0x46d Product 0x4051
[    68.540] (--) evdev: Logitech M510: Found 20 mouse buttons
[    68.540] (--) evdev: Logitech M510: Found scroll wheel(s)
[    68.540] (--) evdev: Logitech M510: Found relative axes
[    68.540] (--) evdev: Logitech M510: Found x and y relative axes
[    68.540] (II) evdev: Logitech M510: Configuring as mouse
[    68.540] (II) evdev: Logitech M510: Adding scrollwheel support
[    68.540] (**) evdev: Logitech M510: YAxisMapping: buttons 4 and 5
[    68.540] (**) evdev: Logitech M510: EmulateWheelButton: 4, EmulateWheelInertia: 10, EmulateWheelTimeout: 200
[    68.540] (**) Option "config_info" "udev:/sys/devices/pci0000:00/0000:00:1d.0/usb3/3-2/3-2:1.2/0003:046D:C52B.0003/0003:046D:4051.0004/input/input5/event3"
[    68.540] (II) XINPUT: Adding extended input device "Logitech M510" (type: MOUSE, id 10)
[    68.540] (II) evdev: Logitech M510: initialized for relative axes.
[    68.541] (**) Logitech M510: (accel) keeping acceleration scheme 1
[    68.541] (**) Logitech M510: (accel) acceleration profile 0
[    68.541] (**) Logitech M510: (accel) acceleration factor: 2.000
[    68.541] (**) Logitech M510: (accel) acceleration threshold: 4
[    68.541] (II) config/udev: Adding input device Logitech M510 (/dev/input/mouse1)
[    68.541] (II) No input driver specified, ignoring this device.
[    68.541] (II) This device may have been added with another device file.
[    68.541] (II) config/udev: Adding input device AT Translated Set 2 keyboard (/dev/input/event0)
[    68.542] (**) AT Translated Set 2 keyboard: Applying InputClass "evdev keyboard catchall"
[    68.542] (II) Using input driver 'evdev' for 'AT Translated Set 2 keyboard'
[    68.542] (**) AT Translated Set 2 keyboard: always reports core events
[    68.542] (**) evdev: AT Translated Set 2 keyboard: Device: "/dev/input/event0"
[    68.542] (--) evdev: AT Translated Set 2 keyboard: Vendor 0x1 Product 0x1
[    68.542] (--) evdev: AT Translated Set 2 keyboard: Found keys
[    68.542] (II) evdev: AT Translated Set 2 keyboard: Configuring as keyboard
[    68.542] (**) Option "config_info" "udev:/sys/devices/platform/i8042/serio0/input/input0/event0"
[    68.542] (II) XINPUT: Adding extended input device "AT Translated Set 2 keyboard" (type: KEYBOARD, id 11)
[    68.542] (**) Option "xkb_rules" "evdev"
[    68.542] (**) Option "xkb_model" "pc104"
[    68.542] (**) Option "xkb_layout" "de"
[    68.542] (**) Option "xkb_variant" "nodeadkeys"
[    68.542] (II) config/udev: Adding input device SynPS/2 Synaptics TouchPad (/dev/input/event1)
[    68.543] (**) SynPS/2 Synaptics TouchPad: Applying InputClass "evdev touchpad catchall"
[    68.543] (**) SynPS/2 Synaptics TouchPad: Applying InputClass "touchpad catchall"
[    68.543] (**) SynPS/2 Synaptics TouchPad: Applying InputClass "Default clickpad buttons"
[    68.543] (II) LoadModule: "synaptics"
[    68.543] (II) Loading /usr/lib/xorg/modules/input/synaptics_drv.so
[    68.543] (II) Module synaptics: vendor="X.Org Foundation"
[    68.543] 	compiled for 1.16.0.901, module version = 1.8.99
[    68.543] 	Module class: X.Org XInput Driver
[    68.543] 	ABI class: X.Org XInput driver, version 21.0
[    68.543] (II) Using input driver 'synaptics' for 'SynPS/2 Synaptics TouchPad'
[    68.543] (**) SynPS/2 Synaptics TouchPad: always reports core events
[    68.543] (**) Option "Device" "/dev/input/event1"
[    68.568] (--) synaptics: SynPS/2 Synaptics TouchPad: x-axis range 1472 - 5472 (res 93)
[    68.568] (--) synaptics: SynPS/2 Synaptics TouchPad: y-axis range 1408 - 4448 (res 125)
[    68.568] (--) synaptics: SynPS/2 Synaptics TouchPad: pressure range 0 - 255
[    68.568] (--) synaptics: SynPS/2 Synaptics TouchPad: finger width range 0 - 15
[    68.568] (--) synaptics: SynPS/2 Synaptics TouchPad: buttons: left right double triple
[    68.568] (--) synaptics: SynPS/2 Synaptics TouchPad: Vendor 0x2 Product 0x7
[    68.568] (--) synaptics: SynPS/2 Synaptics TouchPad: touchpad found
[    68.568] (**) SynPS/2 Synaptics TouchPad: always reports core events
[    68.600] (**) Option "config_info" "udev:/sys/devices/platform/i8042/serio1/input/input2/event1"
[    68.600] (II) XINPUT: Adding extended input device "SynPS/2 Synaptics TouchPad" (type: TOUCHPAD, id 12)
[    68.600] (**) synaptics: SynPS/2 Synaptics TouchPad: (accel) MinSpeed is now constant deceleration 2.5
[    68.600] (**) synaptics: SynPS/2 Synaptics TouchPad: (accel) MaxSpeed is now 1.75
[    68.600] (**) synaptics: SynPS/2 Synaptics TouchPad: (accel) AccelFactor is now 0.040
[    68.600] (**) SynPS/2 Synaptics TouchPad: (accel) keeping acceleration scheme 1
[    68.600] (**) SynPS/2 Synaptics TouchPad: (accel) acceleration profile 1
[    68.600] (**) SynPS/2 Synaptics TouchPad: (accel) acceleration factor: 2.000
[    68.600] (**) SynPS/2 Synaptics TouchPad: (accel) acceleration threshold: 4
[    68.600] (--) synaptics: SynPS/2 Synaptics TouchPad: touchpad found
[    68.601] (II) config/udev: Adding input device SynPS/2 Synaptics TouchPad (/dev/input/mouse0)
[    68.601] (**) SynPS/2 Synaptics TouchPad: Ignoring device from InputClass "touchpad ignore duplicates"
[    68.601] (II) config/udev: Adding input device TPPS/2 IBM TrackPoint (/dev/input/event4)
[    68.601] (**) TPPS/2 IBM TrackPoint: Applying InputClass "evdev pointer catchall"
[    68.601] (**) TPPS/2 IBM TrackPoint: Applying InputClass "Trackpoint Wheel Emulation"
[    68.601] (II) Using input driver 'evdev' for 'TPPS/2 IBM TrackPoint'
[    68.601] (**) TPPS/2 IBM TrackPoint: always reports core events
[    68.601] (**) evdev: TPPS/2 IBM TrackPoint: Device: "/dev/input/event4"
[    68.601] (--) evdev: TPPS/2 IBM TrackPoint: Vendor 0x2 Product 0xa
[    68.601] (--) evdev: TPPS/2 IBM TrackPoint: Found 3 mouse buttons
[    68.601] (--) evdev: TPPS/2 IBM TrackPoint: Found relative axes
[    68.601] (--) evdev: TPPS/2 IBM TrackPoint: Found x and y relative axes
[    68.601] (II) evdev: TPPS/2 IBM TrackPoint: Configuring as mouse
[    68.601] (**) Option "Emulate3Buttons" "false"
[    68.601] (**) Option "EmulateWheel" "true"
[    68.602] (**) Option "EmulateWheelButton" "2"
[    68.602] (**) Option "YAxisMapping" "4 5"
[    68.602] (**) evdev: TPPS/2 IBM TrackPoint: YAxisMapping: buttons 4 and 5
[    68.602] (**) Option "XAxisMapping" "6 7"
[    68.602] (**) evdev: TPPS/2 IBM TrackPoint: XAxisMapping: buttons 6 and 7
[    68.602] (**) evdev: TPPS/2 IBM TrackPoint: EmulateWheelButton: 2, EmulateWheelInertia: 10, EmulateWheelTimeout: 200
[    68.602] (**) Option "config_info" "udev:/sys/devices/platform/i8042/serio1/serio2/input/input3/event4"
[    68.602] (II) XINPUT: Adding extended input device "TPPS/2 IBM TrackPoint" (type: MOUSE, id 13)
[    68.602] (II) evdev: TPPS/2 IBM TrackPoint: initialized for relative axes.
[    68.602] (**) TPPS/2 IBM TrackPoint: (accel) keeping acceleration scheme 1
[    68.602] (**) TPPS/2 IBM TrackPoint: (accel) acceleration profile 0
[    68.602] (**) TPPS/2 IBM TrackPoint: (accel) acceleration factor: 2.000
[    68.602] (**) TPPS/2 IBM TrackPoint: (accel) acceleration threshold: 4
[    68.602] (II) config/udev: Adding input device TPPS/2 IBM TrackPoint (/dev/input/mouse2)
[    68.603] (II) No input driver specified, ignoring this device.
[    68.603] (II) This device may have been added with another device file.
[    68.603] (II) config/udev: Adding input device PC Speaker (/dev/input/event10)
[    68.603] (II) No input driver specified, ignoring this device.
[    68.603] (II) This device may have been added with another device file.
[    68.604] (II) config/udev: Adding input device ThinkPad Extra Buttons (/dev/input/event8)
[    68.604] (**) ThinkPad Extra Buttons: Applying InputClass "evdev keyboard catchall"
[    68.604] (II) Using input driver 'evdev' for 'ThinkPad Extra Buttons'
[    68.604] (**) ThinkPad Extra Buttons: always reports core events
[    68.604] (**) evdev: ThinkPad Extra Buttons: Device: "/dev/input/event8"
[    68.604] (--) evdev: ThinkPad Extra Buttons: Vendor 0x17aa Product 0x5054
[    68.604] (--) evdev: ThinkPad Extra Buttons: Found keys
[    68.604] (II) evdev: ThinkPad Extra Buttons: Configuring as keyboard
[    68.604] (**) Option "config_info" "udev:/sys/devices/platform/thinkpad_acpi/input/input9/event8"
[    68.604] (II) XINPUT: Adding extended input device "ThinkPad Extra Buttons" (type: KEYBOARD, id 14)
[    68.604] (**) Option "xkb_rules" "evdev"
[    68.604] (**) Option "xkb_model" "pc104"
[    68.604] (**) Option "xkb_layout" "de"
[    68.604] (**) Option "xkb_variant" "nodeadkeys"
[    68.616] (II) intel(0): EDID vendor "LEN", prod id 16416
[    68.616] (II) intel(0): Printing DDC gathered Modelines:
[    68.616] (II) intel(0): Modeline "1024x768"x0.0   65.00  1024 1048 1184 1344  768 771 777 806 -hsync -vsync (48.4 kHz eP)
[    68.616] (II) intel(0): Modeline "1024x768"x0.0   54.16  1024 1048 1184 1344  768 771 777 806 -hsync -vsync (40.3 kHz e)
[   103.142] (II) intel(0): resizing framebuffer to 2304x1024
[   103.174] (II) intel(0): switch to mode 1280x1024@60.0 on VGA1 using pipe 1, position (1024, 0), rotation normal, reflection none
[   135.245] (II) intel(0): switch to mode 1024x768@60.0 on LVDS1 using pipe 0, position (1280, 256), rotation normal, reflection none
[   135.264] (II) intel(0): switch to mode 1280x1024@60.0 on VGA1 using pipe 1, position (0, 0), rotation normal, reflection none

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