Bug#879095: sddm flickering on login screen (white + repaint)

To: Debian Bug Tracking System <879095@bugs.debian.org>
Subject: Bug#879095: sddm flickering on login screen (white + repaint)
From: Boris Shtrasman <borissh1983+bugs@gmail.com>
Date: Wed, 25 Oct 2017 10:24:48 +0300
Message-id: <[🔎] 150891628800.1999.6266503312348902694.reportbug@midgard.yggdrasil.local>
Reply-to: Boris Shtrasman <borissh1983+bugs@gmail.com>, 879095@bugs.debian.org
References: <[🔎] 150841201350.2991.8610924859362494347.reportbug@midgard.yggdrasil.local>

Package: sddm
Version: 0.15.0-1
Followup-For: Bug #879095

Dear Maintainer,

A workaround for this issue is to add Option "TearFree" "on" in xorg.conf for radeon
drivers. It doesn't solve the issue just hide it.

-- System Information:
Debian Release: buster/sid
  APT prefers unstable
  APT policy: (901, 'unstable'), (100, 'experimental')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 4.13.0-1-amd64 (SMP w/2 CPU cores)
Locale: LANG=he_IL.UTF-8, LC_CTYPE=he_IL.UTF-8 (charmap=UTF-8) (ignored: LC_ALL set to en_IL.UTF-8), LANGUAGE=en_US:en (charmap=UTF-8) (ignored: LC_ALL set to en_IL.UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages sddm depends on:
ii  adduser                   3.116
ii  debconf [debconf-2.0]     1.5.64
ii  libc6                     2.24-17
ii  libgcc1                   1:7.2.0-11
ii  libpam0g                  1.1.8-3.6
ii  libqt5core5a              5.9.1+dfsg-12
ii  libqt5dbus5               5.9.1+dfsg-12
ii  libqt5gui5                5.9.1+dfsg-12
ii  libqt5network5            5.9.1+dfsg-12
ii  libqt5qml5                5.9.1-6
ii  libqt5quick5              5.9.1-6
ii  libstdc++6                7.2.0-11
ii  libsystemd0               235-2
ii  libxcb-xkb1               1.12-1
ii  libxcb1                   1.12-1
ii  qml-module-qtquick2       5.9.1-6
ii  x11-common                1:7.7+19
ii  xserver-xephyr [xserver]  2:1.19.5-1
ii  xserver-xorg [xserver]    1:7.7+19
ii  xvfb [xserver]            2:1.19.5-1

Versions of packages sddm recommends:
ii  libpam-systemd                    235-2
ii  sddm-theme-breeze [sddm-theme]    4:5.10.5-2
ii  sddm-theme-circles [sddm-theme]   0.13.0-1
ii  sddm-theme-elarun [sddm-theme]    0.15.0-1
ii  sddm-theme-maldives [sddm-theme]  0.15.0-1
ii  sddm-theme-maui [sddm-theme]      0.15.0-1

Versions of packages sddm suggests:
ii  libpam-kwallet5  5.10.5-2

-- debconf-show failed

Section "ServerLayout"
	Identifier     "X.org Configured"
	Screen      0  "Screen0" 0 0
	Screen      1  "Screen1" RightOf "Screen0"
	Screen      2  "Screen2" RightOf "Screen1"
	InputDevice    "Mouse0" "CorePointer"
	InputDevice    "Keyboard0" "CoreKeyboard"
	Option          "BlankTime"     "0"
	Option          "StandbyTime"   "0"
	Option          "SuspendTime"   "0"
	Option          "OffTime"       "0"
EndSection

Section "Files"
	ModulePath   "/usr/lib/xorg/modules"
	FontPath     "/usr/share/fonts/X11/misc"
	FontPath     "/usr/share/fonts/X11/cyrillic"
	FontPath     "/usr/share/fonts/X11/100dpi/:unscaled"
	FontPath     "/usr/share/fonts/X11/75dpi/:unscaled"
	FontPath     "/usr/share/fonts/X11/Type1"
	FontPath     "/usr/share/fonts/X11/100dpi"
	FontPath     "/usr/share/fonts/X11/75dpi"
	FontPath     "/var/lib/defoma/x-ttcidfont-conf.d/dirs/TrueType"
	FontPath     "built-ins"
EndSection

Section "Module"
	Load  "extmod"
	Load  "dbe"
	Load  "glx"
	Load  "dri2"
	Load  "record"
	Load  "dri"
EndSection

Section "InputDevice"
	Identifier  "Keyboard0"
	Driver      "kbd"
	Option      "XkbLayout"  "us,il"
	Option "XKbOptions" "grp:alt_shift_toggle"
EndSection

Section "InputDevice"
	Identifier  "Mouse0"
	Driver      "mouse"
	Option	    "Protocol" "auto"
	Option	    "Device" "/dev/input/mice"
	Option	    "ZAxisMapping" "4 5 6 7"
EndSection

Section "Monitor"
	Identifier   "Monitor0"
	VendorName   "Monitor Vendor"
	ModelName    "Monitor Model"
EndSection

Section "Monitor"
	Identifier   "Monitor1"
	VendorName   "Monitor Vendor"
	ModelName    "Monitor Model"
EndSection

Section "Monitor"
	Identifier   "Monitor2"
	VendorName   "Monitor Vendor"
	ModelName    "Monitor Model"
EndSection

Section "Device"
        ### Available Driver options are:-
        ### Values: <i>: integer, <f>: float, <bool>: "True"/"False",
        ### <string>: "String", <freq>: "<f> Hz/kHz/MHz",
        ### <percent>: "<f>%"
        ### [arg]: arg optional
        #Option     "NoAccel"            	# [<bool>]
        #Option     "SWcursor"           	# [<bool>]
        #Option     "Dac6Bit"            	# [<bool>]
        #Option     "Dac8Bit"            	# [<bool>]
        #Option     "BusType"            	# [<str>]
        #Option     "CPPIOMode"          	# [<bool>]
        #Option     "CPusecTimeout"      	# <i>
        #Option     "AGPMode"            	# <i>
        #Option     "AGPFastWrite"       	# [<bool>]
        #Option     "AGPSize"            	# <i>
        #Option     "GARTSize"           	# <i>
        #Option     "RingSize"           	# <i>
        #Option     "BufferSize"         	# <i>
        #Option     "EnableDepthMoves"   	# [<bool>]
        #Option     "EnablePageFlip"     	# [<bool>]
        #Option     "NoBackBuffer"       	# [<bool>]
        #Option     "DMAForXv"           	# [<bool>]
        #Option     "FBTexPercent"       	# <i>
        #Option     "DepthBits"          	# <i>
        #Option     "PCIAPERSize"        	# <i>
        #Option     "AccelDFS"           	# [<bool>]
        #Option     "IgnoreEDID"         	# [<bool>]
        #Option     "CustomEDID"         	# [<str>]
        #Option     "DisplayPriority"    	# [<str>]
        #Option     "PanelSize"          	# [<str>]
        #Option     "ForceMinDotClock"   	# <freq>
        #Option     "ColorTiling"        	# [<bool>]
        #Option     "VideoKey"           	# <i>
        #Option     "RageTheatreCrystal" 	# <i>
        #Option     "RageTheatreTunerPort" 	# <i>
        #Option     "RageTheatreCompositePort" 	# <i>
        #Option     "RageTheatreSVideoPort" 	# <i>
        #Option     "TunerType"          	# <i>
        #Option     "RageTheatreMicrocPath" 	# <str>
        #Option     "RageTheatreMicrocType" 	# <str>
        #Option     "ScalerWidth"        	# <i>
        #Option     "RenderAccel"        	# [<bool>]
        #Option     "SubPixelOrder"      	# [<str>]
        #Option     "ClockGating"        	# [<bool>]
        #Option     "VGAAccess"          	# [<bool>]
        #Option     "ReverseDDC"         	# [<bool>]
        #Option     "LVDSProbePLL"       	# [<bool>]
        #Option     "AccelMethod"        	# <str>
        #Option     "DRI"                	# [<bool>]
	#Option     "ConnectorTable"     	# <str>
        #Option     "DefaultConnectorTable" 	# [<bool>]
        #Option     "DefaultTMDSPLL"     	# [<bool>]
        #Option     "TVDACLoadDetect"    	# [<bool>]
        #Option     "ForceTVOut"         	# [<bool>]
        #Option     "TVStandard"         	# <str>
        #Option     "IgnoreLidStatus"    	# [<bool>]
        #Option     "DefaultTVDACAdj"    	# [<bool>]
        #Option     "Int10"              	# [<bool>]
        #Option     "EXAVSync"           	# [<bool>]
        #Option     "ATOMTVOut"          	# [<bool>]
        #Option     "R4xxATOM"           	# [<bool>]
        #Option     "ForceLowPowerMode"  	# [<bool>]
        #Option     "DynamicPM"          	# [<bool>]
        #Option     "NewPLL"             	# [<bool>]
        #Option     "ZaphodHeads"        	# <str>
	Identifier  "Card0"
	Driver      "radeon"
	BusID       "PCI:1:5:0"
	option      "TearFree" "on"
EndSection

Section "Device"
        ### Available Driver options are:-
        ### Values: <i>: integer, <f>: float, <bool>: "True"/"False",
        ### <string>: "String", <freq>: "<f> Hz/kHz/MHz",
        ### <percent>: "<f>%"
        ### [arg]: arg optional
        #Option     "ShadowFB"           	# [<bool>]
        #Option     "Rotate"             	# <str>
        #Option     "fbdev"              	# <str>
        #Option     "debug"              	# [<bool>]
	Identifier  "Card1"
	Driver      "fbdev"
	BusID       "PCI:1:5:0"
EndSection

Section "Device"
        ### Available Driver options are:-
        ### Values: <i>: integer, <f>: float, <bool>: "True"/"False",
        ### <string>: "String", <freq>: "<f> Hz/kHz/MHz",
        ### <percent>: "<f>%"
        ### [arg]: arg optional
        #Option     "ShadowFB"           	# [<bool>]
        #Option     "DefaultRefresh"     	# [<bool>]
        #Option     "ModeSetClearScreen" 	# [<bool>]
	Identifier  "Card2"
	Driver      "vesa"
	BusID       "PCI:1:5:0"
EndSection

Section "Screen"
	Identifier "Screen0"
	Device     "Card0"
	Monitor    "Monitor0"
	SubSection "Display"
		Viewport   0 0
		Depth     1
	EndSubSection
	SubSection "Display"
		Viewport   0 0
		Depth     4
	EndSubSection
	SubSection "Display"
		Viewport   0 0
		Depth     8
	EndSubSection
	SubSection "Display"
		Viewport   0 0
		Depth     15
	EndSubSection
	SubSection "Display"
		Viewport   0 0
		Depth     16
	EndSubSection
	SubSection "Display"
		Viewport   0 0
		Depth     24
	EndSubSection
EndSection

Section "Screen"
	Identifier "Screen1"
	Device     "Card1"
	Monitor    "Monitor1"
	SubSection "Display"
		Viewport   0 0
		Depth     1
	EndSubSection
	SubSection "Display"
		Viewport   0 0
		Depth     4
	EndSubSection
	SubSection "Display"
		Viewport   0 0
		Depth     8
	EndSubSection
	SubSection "Display"
		Viewport   0 0
		Depth     15
	EndSubSection
	SubSection "Display"
		Viewport   0 0
		Depth     16
	EndSubSection
	SubSection "Display"
		Viewport   0 0
		Depth     24
	EndSubSection
EndSection

Section "Screen"
	Identifier "Screen2"
	Device     "Card2"
	Monitor    "Monitor2"
	SubSection "Display"
		Viewport   0 0
		Depth     1
	EndSubSection
	SubSection "Display"
		Viewport   0 0
		Depth     4
	EndSubSection
	SubSection "Display"
		Viewport   0 0
		Depth     8
	EndSubSection
	SubSection "Display"
		Viewport   0 0
		Depth     15
	EndSubSection
	SubSection "Display"
		Viewport   0 0
		Depth     16
	EndSubSection
	SubSection "Display"
		Viewport   0 0
		Depth     24
	EndSubSection
EndSection

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References:
- Bug#879095: sddm flickering on login screen (white + repaint)
  - From: Boris Shtrasman <borissh1983+bugs@gmail.com>

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