Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: xserver-xorg-video-ati (Ubuntu)
Status: New => Confirmed
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https://bugs.launchpad.net/bugs/1565729
Title:
Suspend/hibernate freezes with radeon driver loaded on hybrid graphics
Status in xserver-xorg-video-ati package in Ubuntu:
Confirmed
Bug description:
On at least Ubuntu 15.10 and 16.04 with the radeon driver (version
7.5.0+git20150819-0ubuntu1 on 15.10, version 7.6.1-1ubuntu2 on 16.04)
trying to suspend or hibernate a Lenovo G50-80 with Intel HD Graphics
5500 (Broadwell GT2) and Advanced Micro Devices [AMD/ATI] Sun XT
[Radeon HD 8670A/8670M/8690M / R5 M330] freezes the system when the
radeon driver is loaded even if it is not in use. Turning off discrete
graphics using the BIOS settings and using only the integrated Intel
chip so that the radeon driver is not loaded does not cause this
problem. Also, this problem does not occur on Ubuntu 14.04.4 using the
kernel and X stack (LTS Enablement Stack) from 15.10 (Wily) even with
the radeon driver loaded.
There is a message from the radeon driver during boot, "radeon
0000:04:00.0: VCE init error (-22)." which is an upstream issue
occurring on other distributions too and is reported at
https://bugs.freedesktop.org/show_bug.cgi?id=92722. However, even if
the radeon driver is loaded, suspend/hibernate does not freeze on,
e.g., Fedora 23 and, as mentioned above, even Ubuntu 14.04.4. I have
tried using S1 instead of S3 sleep to no avail.
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