Bug#782610: linux-image-3.16.0-4-amd64, xserver-xorg-video-radeon: Acer Aspire One 725: black screen in X after resume

[Alex Deucher]

On Tue, Apr 14, 2015 at 2:58 PM, Simon Richter <sjr at debian.org> wrote:
> Package: linux-image-3.16.0-4-amd64,xserver-xorg-video-radeon
> Severity: normal
>
> Hi,
>
> I've recently installed an Acer Aspire One 725 with Debian jessie, and
> found that after resuming from sleep, the display remains black (but
> backlight is on) with X. Text mode consoles work fine with and without
> console-setup.
>
> This system uses an AMD CPU with integrated graphics:
>
> model name    : AMD C-70 APU with Radeon(tm) HD Graphics
>
> 00:01.0 VGA compatible controller [0300]: Advanced Micro Devices [AMD] nee
> ATI Device [1002:980a]
>
> As I've already passed that machine back to the owner (with sleep mode
> disabled in systemd config), it is difficult for me to do further testing.

When you say sleep, do you mean suspend/resume or dpms?  Depending on
the hw involved, this patch might help:
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=66c2b84ba6256bc5399eed45582af9ebb3ba2c15

Alex

>
>    Simon
>
> -- System Information:
> Debian Release: 8.0
>   APT prefers testing
>   APT policy: (990, 'testing'), (500, 'stable')
> Architecture: amd64 (x86_64)
> Foreign Architectures: i386
>
> Kernel: Linux 3.16.0-4-amd64 (SMP w/8 CPU cores)
> Locale: LANG=de_DE.UTF-8, LC_CTYPE=de_DE.UTF-8 (charmap=UTF-8)
> Shell: /bin/sh linked to /bin/dash
> Init: systemd (via /run/systemd/system)
>
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