[Nouveau] help with signal from monitor

[Ilia Mirkin]

On Tue, Jan 26, 2016 at 6:24 PM, don fisher <hdf3 at comcast.net> wrote:
> On 01/26/2016 03:58 PM, Ilia Mirkin wrote:
>>
>> On Tue, Jan 26, 2016 at 5:54 PM, don fisher <hdf3 at comcast.net> wrote:
>>>
>>> On 01/26/2016 03:24 PM, Ilia Mirkin wrote:
>>>>
>>>>
>>>> sleep 1 && xset dpms force off
>>>
>>>
>>> Could you confirm exactly how to add the drm.debug=0x1e option. Is it
>>> another parameter on the kernel command line?
>>
>>
>> Yep
>>
>>> Where does the output data go?
>>
>>
>> dmesg
>>
>>> Is there a way to get it into a file?
>>
>>
>> dmesg > somefile
>>
>> Chances are that your syslog is also set up to read kernel messages
>> and store them to some log file.
>>
>> Cheers,
>>
>>    -ilia
>>
> Attached is the output from dmesg. I issued the:
>   sleep 1 && xset dpms force off
> command, and the the next dmesg dump included lines after 74.948936. I then
> issued the command again and the dump lines repeated as you can see.
>
> Please share you thoughts, and thanks for your help.

You do indeed get some hotplug events. Odd. This is a little out of my league :(

By the way, I notice that your GPU is having trouble bringing up its
acceleration unit. We added a workaround to reset the GPU harder when
bringing it up which should hopefully resolve that issue, available in
kernel 4.4. But I don't think it affects your situation.

  -ilia