On Sat, Oct 22, 2022 at 7:06 PM Chris Healy <cphealy@xxxxxxxxx> wrote: > > I can't speak to why you are experiencing issues when using the GPU, > but in the examples you gave, the example that is working is using a > SW based GL implementation instead of the real GPU. This can be > determined by looking at the GL_RENDERER string to see if it mentions > a Vivante GPU or something else (like LLVMPIPE). It's quite likely > that if you were using the real GPU with etnaviv in Mesa with the > older config you would also experience similar issues. As such, we > shouldn't consider this a regression between the two Ubuntu versions. Chris, Thanks for this insight. I was curious about the meaning of the GL_RENDERER string which is why I included that. I'm not clear how to configure what renderer is used? Best Regards, Tim > > One thing you may want to try doing is run with Mesa 22.2.1 and TOT to > see if either of these address any of the issues you are experiencing. > > On Thu, Oct 20, 2022 at 1:44 PM Tim Harvey <tharvey@xxxxxxxxxxxxx> wrote: > > > > Greetings, > > > > I use a standard Ubuntu 20.04 focal rootfs with a mainline kernel on > > an IMX6Q based board and have had no issues using things like gnome > > desktop, glxgears, glmark2 however recently I updated the rootfs to > > Ubuntu 22.04 jammy using the same mainline kernel and now I see some > > issues. I've replicated the issue with several kernel versions > > including 5.4, 5.10, 5.15 and 6.0 so I would say this is not a kernel > > regression but something related to the graphics stack being used > > which I'm not very familiar with. > > > > The issues I see can be described as: > > - mouse cursor is incorrect (looks like a hatched square) > > - glxgears shows some sort of sync/jitter issue and has a fairly low framerate > > - glmark2 shows a some sync issues then after a few seconds results in > > a GPU hang > > > > My ubuntu focal image that appears to work fine has the following: > > gnome 3.36.5-0 > > xserver-xorg 1:7.7+19 > > xserver-xorg-core 2:1.20.13-1 > > xwayland 2:1.20.13-1 > > glmark2 2021.02 > > mesa-utils 8.4.0-1 > > GL_VENDOR: Mesa/X.org > > GL_RENDERER: llvmpipe (LLVM 12.0.0, 128 bits) > > GL_VERSION: 3.1 Mesa 21.2.6 > > > > My ubuntu jammy image that has the issues has the following: > > gnome-41.7-0 > > xserver-xorg 1:7.7+23 > > xserver-xorg-core 2:21.1.3-2 > > xwayland 2:22.1.1-1 > > glmark2 2021.02-0 > > mesa-utils 8.4.0-1 > > GL_VENDOR: etnaviv > > GL_RENDERER: Vivantte GC2000 rev 5108 > > GL_VERSION: 2.1 Mesa 22.0.5 > > > > Does anyone have any ideas on what might be going on here? I apologize > > for my lack of knowledge regarding the software layers on top of the > > etnaviv kernel driver being used here. > > > > Best Regards, > > > > Tim
