Em qua., 30 de set. de 2020 às 14:04, Simon McVittie <s...@debian.org> escreveu:
> On Wed, 30 Sep 2020 at 12:31:06 -0300, Leandro Cunha wrote: > > I did this test and there was no crash, but see the attached > > screenshot to see how the wallpaper. > > Hmm, interesting failure mode. I think there was a bug fixed recently > where the animated background draws one frame at the wrong brightness > before adjusting correctly to the time of day - this might mean your Shell > is actually showing half of one frame and half of another or something? > > This made me think that there could be a problem with opengl that may be occurring in more specific versions of the Kernel. After conducting studies in other distros and Debian, I realized that the same version of nouveau was working normally. I have also studied a number of bug reports associated with other problems that have to do with wallpapers in Gnome. However, I don't have many details to be able to state this until now, but I keep studying. https://www.omgubuntu.co.uk/2015/05/animated-wallpaper-adds-live-backgrounds-to-linux-distros > > In the bug attached see from 10:29 when I started testing with Kernel > > 4.19, until 10:44 that appears in the screen capture that shows both > > wallpapers side by side. Normally the interface stopped responding, > > but what I do is run su -c "cat /var/log/syslog > log" on tty to > > check. > > To confirm, are you saying that the log entries from Sep 30 10:29 to > 10:44 are with the 4.19 kernel from Debian 10, but with everything else > (including Mesa and GNOME) taken from unstable? > Yes. > > > What calls attention that the screen is black, but the interface does > > not freeze with this version of Kernel, being that I ran the tests on > > Xorg where I had the best performance so far. > > This looks interesting: > > > Sep 30 10:29:36 debian-pc gnome-shell[1707]: nouveau: kernel rejected > pushbuf: Não foi possível alocar memória > > Sep 30 10:29:36 debian-pc kernel: [ 1520.979894] nouveau 0000:01:00.0: > Xorg[1558]: fail ttm_validate > > Sep 30 10:29:36 debian-pc kernel: [ 1520.979904] nouveau 0000:01:00.0: > Xorg[1558]: validating bo list > > Sep 30 10:29:36 debian-pc kernel: [ 1520.979915] nouveau 0000:01:00.0: > Xorg[1558]: validate: -12 > > Sep 30 10:29:36 debian-pc gnome-shell[1707]: nouveau: ch7: krec 0 pushes > 1 bufs 13 relocs 0 > > This also looks maybe bad: > > > Sep 30 10:44:10 debian-pc kernel: [ 2395.486040] nouveau 0000:01:00.0: > fb: trapped read at 00473a4200 on channel 3 [1fa20000 Xorg[1558]] engine 00 > [PGRAPH] client 0a [TEXTURE] subclient 00 [] reason 00000002 > [PAGE_NOT_PRESENT] > > Sep 30 10:44:10 debian-pc kernel: [ 2395.493226] nouveau 0000:01:00.0: > fb: trapped read at 0047913d00 on channel 3 [1fa20000 Xorg[1558]] engine 00 > [PGRAPH] client 0a [TEXTURE] subclient 00 [] reason 00000002 > [PAGE_NOT_PRESENT] > > which I think indicates a bug in the nouveau kernel-side driver? But I > might be wrong. > > > Sep 30 10:30:59 debian-pc gnome-shell[1707]: JS ERROR: TypeError: > this._dialog is null#012_onFocusChanged > @resource:///org/gnome/shell/ui/closeDialog.js:135:9#012reset > @resource:///org/gnome/shell/ui/viewSelector.js:452:26#012show > @resource:///org/gnome/shell/ui/viewSelector.js:275:14#012_animateVisible > @resource:///org/gnome/shell/ui/overview.js:580:27#012show > @resource:///org/gnome/shell/ui/overview.js:566:14#012_onShowAppsButtonToggled@ > /usr/share/gnome-shell/extensions/ > dash-to-d...@micxgx.gmail.com/docking.js:1908:31 > > It's probably best if you disable extensions like dash-to-dock while > testing this. > > smcv > After the release of version 5.9 of Linux, there was a deterioration in performance, causing frequent crashes with nouveau, which made me stay on the buster and not use the latest versions of gnome and also of kernel. I sent a message to a Gnome contributor to help study the bug and I am waiting for a response from him.
