Bug#814279: Suspend/resume brightness issue Debian 8 with i965 integrated video controller
Source: linux
Source-Version: 3.16.7-ckt25-1
Hi,
On Tue, Feb 09, 2016 at 11:00:15PM +0100, r wrote:
> Package: kernel
> Version: 3.16.7-ckt20-1+deb8 amd64
>
> The issue is related to the suspend/resume brightness with i965 integrated video
> controller. I am able to hibernate and resume but I'm not able to resume from
> suspend. When I try to suspend both from GUI than from terminal (pm-suspend or
> systemctl suspend) I get only a black screen on resume. The computer works but
> it seems that the brightness is set to zero and I can not turn the screen on.
> If I try to hibernate, on resume all works well. I try to switch from tt1 to tt6
> but nothing changes, the screen remain black. I also tried to use the brightness
> key but nothing happens.
>
> I discovered the bug was not present in the previous debian
> stable kernel 3.2 but is still present in the 4.2 and 4.3 kernel from
> backports. I compiled my own 4.4 kernel and now all seems to work.
>
> I run debian on a macbook 13".
>
> This is the C shared lib:
> -----
> :~$ dpkg -l libc6
> libc6:amd64 2.19-18+deb8u2 amd64
> -----
>
> This is my graphic card:
> -----
> :~$ lspci | grep VGA
> 00:02.0 VGA compatible controller: Intel Corporation Mobile GM965/GL960
> Integrated Graphics Controller (primary) (rev 03)
> -----
>
> This is dmesg after system resumed:
[...]
So this looks like https://bugs.freedesktop.org/show_bug.cgi?id=88325
and fixed in Linus tree
https://git.kernel.org//linus/1b9448b071caa7d10bb2569fabe3020a2c25ae59
(v4.4-rc2) and backported in 3.16.7-ckt22 as
cb7b74a708c5cd9cdf29b820f340f790d73ae217.
Thanks for confirming it is fixed in v3.16.7-ckt25, closing the
bugreport.
Regards,
Salvatore
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