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Bug#703134: marked as done (base: Screen brightness dim on a Dell XPS M1710; can't change it)

Your message dated Sat, 24 Apr 2021 08:06:29 -0700 (PDT)
with message-id <608433f5.1c69fb81.4ef6f.8580@mx.google.com>
and subject line Closing this bug (BTS maintenance for src:linux bugs)
has caused the Debian Bug report #703134,
regarding base: Screen brightness dim on a Dell XPS M1710; can't change it
to be marked as done.

This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.

(NB: If you are a system administrator and have no idea what this
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misconfiguration somewhere. Please contact owner@bugs.debian.org
immediately.)


-- 
703134: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=703134
Debian Bug Tracking System
Contact owner@bugs.debian.org with problems
--- Begin Message --- 
Package: base
Severity: important

Dear Maintainer,

I've been unable to change the screen brightness today, on a Dell XPS M1710 laptop.  It stays dim.  When changing from a virtual terminal to X, the screen is bright briefly, but immediately dims again.  During boot, the brightness is correct for Grub but dims during the boot process.

If I use the brightness keys to set the brighness to the minimum value, the screen doesn't brighten when I change to the graphical desktop from a text console (ie. ctrl+alt+f1), but when I set it to maximum it becomes bright for about 1/4 second when I change to the graphical desktop.

The brightness keys don't work, nor does writing to /sys/class/backlight/acpi_video0/backlight.

I've only seen this today, so maybe it's related to these package updates:

Start-Date: 2013-03-15  17:02:14
Upgrade: xserver-xorg-video-ati:amd64 (6.14.4-7, 6.14.4-8), gstreamer0.10-alsa:a
md64 (0.10.36-1, 0.10.36-1.1), linux-image-3.2.0-4-amd64:amd64 (3.2.35-2, 3.2.39
-2), linux-headers-3.2.0-4-amd64:amd64 (3.2.35-2, 3.2.39-2), linux-headers-3.2.0
-4-common:amd64 (3.2.35-2, 3.2.39-2), libgstreamer-plugins-base0.10-0:amd64 (0.1
0.36-1, 0.10.36-1.1), linux-libc-dev:amd64 (3.2.35-2, 3.2.39-2), xserver-xorg-vi
deo-radeon:amd64 (6.14.4-7, 6.14.4-8), gstreamer0.10-plugins-base:amd64 (0.10.36
-1, 0.10.36-1.1)
End-Date: 2013-03-15  17:03:02

I don't know whether the brightness controls worked before as the screen was always bright enough.

I think this is the relevant part of 'lshw':

           *-display
                description: VGA compatible controller
                product: G71 [GeForce Go 7950 GTX]
                vendor: NVIDIA Corporation
                physical id: 0
                bus info: pci@0000:01:00.0
                version: a1
                width: 64 bits
                clock: 33MHz
                capabilities: pm msi pciexpress vga_controller bus_master cap_list rom
                configuration: driver=nouveau latency=0
                resources: irq:16 memory:ed000000-edffffff memory:d0000000-dfffffff memory:ee000000-eeffffff ioport:ef00(size=128) memory:efe00000-efe1ffff

Let me know if you need any more information.

-- System Information:
Debian Release: 7.0
  APT prefers testing
  APT policy: (500, 'testing')
Architecture: amd64 (x86_64)

Kernel: Linux 3.2.0-4-amd64 (SMP w/2 CPU cores)
Locale: LANG=en_AU.UTF-8, LC_CTYPE=en_AU.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash

--- End Message ---
--- Begin Message --- 
Hi

This bug was filed for a very old kernel or the bug is old itself
without resolution.

If you can reproduce it with

- the current version in unstable/testing
- the latest kernel from backports

please reopen the bug, see https://www.debian.org/Bugs/server-control
for details.

Regards,
Salvatore

--- End Message ---
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