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

[Simon Richter <sjr@debian.org>]

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.

   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)