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Re: Re: [Regression] 4.3.0rc4 through rc7: No LCD backlight on Thinkpad T60P

From Michel Dänzer <michel@daenzer.net>
Newsgroups linux.kernel
Subject Re: Re: [Regression] 4.3.0rc4 through rc7: No LCD backlight on Thinkpad T60P
Date 2015-10-30 02:00 +0100
Message-ID <qp6cV-7oo-1@gated-at.bofh.it> (permalink)
References <qoW3U-1al-7@gated-at.bofh.it> <qoWng-1hg-17@gated-at.bofh.it>
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On 29.10.2015 23:26, Simon Wood wrote:
> On Thu, October 29, 2015 8:07 am, Simon Wood wrote:
>>
> 
>>> Well, I can confirm that the patch stopped the Oops - but unfortunatly
>>> the screen is still dark.
>>>
>>> Also, Oops _does_ happen with rc2 but the screens is OK with that...
>>> Back
>>> to looking through the logs.
>>
>> I couldn't see anything of note in the syslog, so attempted to bisect the
>>  problem some - although building takes considerable time on this machine
>>  (note 32bit).
>>
>>
>> 4.3.0rc6 - bad
>> 4.3.0rc7 - bad
>> 4.3.0rc2 - good
>> 4.3.0rc4 - bad (049e6dde7e57f0054fdc49102e7ef4830c698b46)
>> 4.3.0rc3 - good (9ffecb10283508260936b96022d4ee43a7798b4c)
>>
>>
>> So problem (no LCD backlight) must have been introduced between those.
> 
> Well this looks like it might have something to do with it.... will
> attempt a build just before it.
> --
> commit 4281f46ef839050d2ef60348f661eb463c21cc2e
> Author: Michel Dänzer <michel.daenzer@amd.com>
> Date:   Mon Sep 28 18:16:31 2015 +0900
> 
>     drm/radeon: Restore LCD backlight level on resume (>= R5xx)

Please try the patches from
http://lists.freedesktop.org/archives/dri-devel/2015-October/093514.html .


-- 
Earthling Michel Dänzer               |               http://www.amd.com
Libre software enthusiast             |             Mesa and X developer
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[Regression] 4.3.0rc4 through rc7: No LCD backlight on Thinkpad  T60P "Simon Wood" <simon@mungewell.org> - 2015-10-29 15:10 +0100
  Re: [Regression] 4.3.0rc4 through rc7: No LCD backlight on Thinkpad  T60P "Simon Wood" <simon@mungewell.org> - 2015-10-29 15:30 +0100
    Re: [Regression] 4.3.0rc4 through rc7: No LCD backlight on Thinkpad  T60P "Simon Wood" <simon@mungewell.org> - 2015-10-29 23:20 +0100
    Re: Re: [Regression] 4.3.0rc4 through rc7: No LCD backlight on  Thinkpad T60P Michel Dänzer <michel@daenzer.net> - 2015-10-30 02:00 +0100
      Re: Re: [Regression] 4.3.0rc4 through rc7: No LCD backlight on  Thinkpad T60P "Simon Wood" <simon@mungewell.org> - 2015-10-30 03:50 +0100
        Re: Re: [Regression] 4.3.0rc4 through rc7: No LCD backlight on  Thinkpad T60P "Simon Wood" <simon@mungewell.org> - 2015-10-30 15:00 +0100

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