[Mesa-dev] very strange intermittent frame-dropping

[Eero Tamminen]

Hi,

On 04.04.2017 14:10, Luke Kenneth Casson Leighton wrote:
> On Tue, Apr 4, 2017 at 11:04 AM, Eero Tamminen
> <eero.t.tamminen at intel.com> wrote:
>>> anyway, apologies: nobody whose applications are affected by this
>>> really has a clue where the *actual* bug is so i am escalating it down
>>> the chain of library dependencies, making people aware.  it could be
>>> X11, it could be mesa, we just don't know.
>>
>>
>> Does it happen only with the old, non-compositing window managers like
>> FVWM2, or also with something newer?
>
>  there's a whole stack of people reporting this occurring, running the
> full range of window managers.
>
>> Does DRI2 vs. DRI3 have any effect on it?
>
>  hmm, good question.  i'm running with "DRI" "true"

Valid values for "DRI" setting are "2" or "3".


 > (so don't know if it's 2 or 3),

This tells you which version apps get:
	LIBGL_DEBUG=verbose glxgears


> other people will have different settings.

It would be interesting to know whether there's any correspondence with 
the DRI setting, and what exact Mesa & X versions they have.


> i run with a
> *lot* of applications that are left running 24x7 for days/months at a
> time (because they're a pain to shut down and reopen), i'll see if i
> can use startx -- :1 or something to try out a different DRI setting.
> will get back to you soon.


	- Eero