Re: t460s fedora 24 - display freeze

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On 09/21/2016 09:05 AM, Dusty Mabe wrote:
> 
> 
> On 09/21/2016 08:41 AM, Dusty Mabe wrote:
>>
>>
>> On 09/20/2016 07:22 PM, Andrew Lutomirski wrote:
>>> On Sep 20, 2016 7:31 AM, "Dusty Mabe" <dusty@xxxxxxxxxxxxx <mailto:dusty@xxxxxxxxxxxxx>> wrote:
>>>>
>>>>
>>>> Several times over the past month my t460s has just blank screens
>>>> when I come back to it after some time. I don't know if the thing
>>>> froze up completely or if it is just the display not working. I lock
>>>> my screens (laptop + 2 external monitors) and then leave for an hour
>>>> or so. When I come back no attempt at input will get the lockscreen
>>>> to appear. I have to power down and then back up.
>>>>
>>>> After boot I look at the journal and I always tend to see some of
>>>> these:
>>>>
>>>> [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO underrun
>>>
>>> Sadly, i915 has had issues on and off with Skylake.
>>
>> :( 
>>
>>>
>>>> [drm:intel_pipe_update_end [i915]] *ERROR* Atomic update failure on pipe C (start=167156 end=167157) time 146 us, min 1073, max 1079, scanline start 1072, end 1082
>>>
>>> This smells like a bug that was fixed in the 4.8 series a bit late IIRC.  Search for i915 SAGV.
>>
>> Ok, I'll browse through the commit log.
>>
> 
> I think this commit is probably the one that you were referring to:
> 
> https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=f403372
> 

This happened to me again today so I decided to grab the latest F25
kernel to see if that causes the problem to go away.

kernel-4.8.0-0.rc6.git0.1.fc25.x86_64
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