On 10/11/2016 11:19 AM, Tim Evans wrote:
> On 10/11/2016 10:55 AM, Roberto Ragusa wrote:
>> On 10/10/2016 09:30 PM, Tim Evans wrote:
>>> On 10/10/2016 02:59 PM, Ted Roche wrote:
>>>
>>> I regularly see something *somewhat* similar on my Lenovo T530.
>>> Specifically, after running for a couple of days, it begins blanking
>>> the screen after a reliable 15 seconds of inactivity.
>>>
>>> At first, I thought this might be a hardware issue with the
>>> lid/on-off switch, since I do close the lid when I'm away from the
>>> system. However, I don't see this in Windows 10 on this dual-boot
>>> laptop.
>>>
>>> Interestingly, when the screen returns from black after I touch a
>>> key, it often returns to a different window (e.g., I was reading mail
>>> in Thunderbird when it blanked, but Chrome appears when it lights
>>> back up).  AND, after a second or two, the screen switches back to
>>> the original window (e.g., t-bird). This tends to suggest something
>>> X-related.
>>
>> In my case I see instants of black screen on a Lenovo P50 with
>> Fedora 24, using Intel graphics.
>>
>> Looks like a refresh problem, or maybe something related to switching
>> the panel to the right gfx adapter (there is a dormant nvidia too,
>> with nouveau blacklisted).
>>
>> My compositor is kwin.
>>
> 
> Thank you, Roberto.  My T530 also has Intel graphics, but I have not
> installed the Nvidia drivers--only the Nouveau that was installed at
> install time. Not sure what you mean about "switching" adaptors.

He means that if you have multiple graphics adapters, does switching
your display to one of the other adapters exhibit the same problem.
Since your T530 only has one graphics adapter, that doesn't apply. I
guess you could try using an external monitor and see if the problem
persists.
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- Rick Stevens, Systems Engineer, AllDigital    ri...@alldigital.com -
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