Re: [Mesa-dev] very strange intermittent frame-dropping

eero, chris: michel informs me that this is a known bug in xserver-xorg-core 1.19.0 and that upgrading to at least 1.19.1 or above fixes the problem. i'll need to wait until another unscheduled reboot but will keep you informed, and will try out DRI2 as well as DRI3. l.

Re: [Mesa-dev] very strange intermittent frame-dropping

well it had to happen eventually (i forgot to keep the battery charged up) so the opportunity to restart arrived - changed to DRI=3 and, ta-daaa, problem's gone. ... or, at least, carrying out the previously 100%-repeatable test (resize of a window under fvwm2) is no longer 100% repeatable. i'll

Re: [Mesa-dev] very strange intermittent frame-dropping

On Thu, Apr 6, 2017 at 11:36 AM, Eero Tamminen wrote: >> LIBGL_DEBUG=verbose glxgears >> libGL: Using DRI2 for screen 0 >> >> huh. so i _thought_ it was going to be DRI3. that's supposed to be >> the default, isn't it? > > > You need it enabled in Intel DDX build,

Re: [Mesa-dev] very strange intermittent frame-dropping

Hi, On 06.04.2017 00:36, Luke Kenneth Casson Leighton wrote: eero, apologies, the mesa-dev list's traffic is very high, i'll switch over to digest, so please do cc me each time, to mitigate that. OK. there's a whole stack of people reporting this occurring, running the full range of

Re: [Mesa-dev] very strange intermittent frame-dropping

ok installed libxcb1-dbg from debian, that gives more info, sorry i can't install all the dbg symbols because of conflicting dependencies, it seems that the packages are not fully sync'd at debian/testing. starting to look like an x11 (xcb-related) bug, not mesa, what do you think? l.

Re: [Mesa-dev] very strange intermittent frame-dropping

On Wed, Apr 5, 2017 at 10:43 PM, Chris Wilson wrote: >> 303 frames in 5.0 seconds = 60.424 FPS >> 212 frames in 11.7 seconds = 18.079 FPS > > Overshoots by 6s. that's because, after the first 5 seconds, i did the fvwm2-based "window resize" operation which triggered

Re: [Mesa-dev] very strange intermittent frame-dropping

On Wed, Apr 05, 2017 at 10:36:14PM +0100, Luke Kenneth Casson Leighton wrote: > eero, apologies, the mesa-dev list's traffic is very high, i'll switch > over to digest, so please do cc me each time, to mitigate that. > --- > crowd-funded eco-conscious hardware: https://www.crowdsupply.com/eoma68 >

Re: [Mesa-dev] very strange intermittent frame-dropping

eero, apologies, the mesa-dev list's traffic is very high, i'll switch over to digest, so please do cc me each time, to mitigate that. --- crowd-funded eco-conscious hardware: https://www.crowdsupply.com/eoma68 On Wed, Apr 5, 2017 at 1:31 PM, Eero Tamminen wrote: >

Re: [Mesa-dev] very strange intermittent frame-dropping

Hi, On 04.04.2017 14:10, Luke Kenneth Casson Leighton wrote: On Tue, Apr 4, 2017 at 11:04 AM, Eero Tamminen 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

Re: [Mesa-dev] very strange intermittent frame-dropping

--- crowd-funded eco-conscious hardware: https://www.crowdsupply.com/eoma68 On Tue, Apr 4, 2017 at 12:10 PM, Luke Kenneth Casson Leighton wrote: >> Does DRI2 vs. DRI3 have any effect on it? > > hmm, good question. i'm running with "DRI" "true" (so don't know if > it's 2 or 3),

Re: [Mesa-dev] very strange intermittent frame-dropping

On Tue, Apr 4, 2017 at 11:04 AM, Eero Tamminen 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

Re: [Mesa-dev] very strange intermittent frame-dropping

Hi, On 04.04.2017 09:23, Luke Kenneth Casson Leighton wrote: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=848895 there's a really strange and comprehensively cross-application intermittent bug that's only occurring on opengl-based applications, that's been introduced some time in the past

[Mesa-dev] very strange intermittent frame-dropping

https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=848895 there's a really strange and comprehensively cross-application intermittent bug that's only occurring on opengl-based applications, that's been introduced some time in the past year. to be absolutely honest nobody's even sure it's actually