#754659 Some actions destroy backlite on Lenovo X61s

Package:
xserver-xorg
Source:
xorg
Description:
X.Org X server
Submitter:
Klaus Ethgen
Date:
2015-09-05 06:24:04 UTC
Severity:
normal
#754659#5
Date:
2014-07-13 09:12:58 UTC
From:
To:
I tagged that bug critical as it has some bad effect to the hardware. I
am not fully sure where the problem lives in. The only informations that
I have I will put into this report.

I use luakit on my laptop, a Lenovo X61s with a intel GM965/GL960
graphic controller. I am not able to reproduce that bug with any other
browser or software or any other hardware. As X is involved, I will also
attach the full Xorg log of a broken session.

When I use luakit and _load new pages_ it often blanks the screen by
switching the backlight of. There is no way to switch it back on again
but with a trick, putting the laptop to sleep and waking it up again, I
get some backlight back. Some means in this case that only the right
side is lighted. I have to do a full system restart to get the proper
backlight back. I do not know if that is good for the hardware or not
but I do not think that it should be the case that a browser is able to
destroy hardware.

I have no idea what does trigger the bug but I fear about using luakit
on that laptop anymore.

#754659#10
Date:
2015-09-03 22:35:39 UTC
From:
To:
reassign 754659 xserver-xorg
severity 754659 normal
thanks

luakit is just a web browser and has no direct access to hardware by itself.
I'm reassigning this report to xserver-xorg as the most probably package
to blame, but even in such case, be ready to provide the X maintainers
whatever additional information they might ask you.

Thanks.

#754659#21
Date:
2015-09-04 08:28:21 UTC
From:
To:
Am Do den  3. Sep 2015 um 23:35 schrieb Santiago Vila:

That might be. But I never ever seen that problem with other software.

It seems to be an only problem of luakit. And will not start it again on
my laptop as this is destroying the hardware(!)

Regards
   Klaus

#754659#26
Date:
2015-09-05 06:22:19 UTC
From:
To:
X doesn't touch the hardware nowadays, that all lives in the kernel.

Cheers,
Julien