Just an update to say that the rendering glitches also happen on Xfce but seem to be limited to Firefox. Here's the output from journalctl when it happens:
root@iMac:~# journalctl -b -p err --since="10 minutes ago" Jan 26 06:53:12 iMac kernel: nouveau 0000:03:00.0: fifo: CACHE_ERROR - ch 5 [Xorg[2662]] subc 0 mthd 0060 data beef0201 Jan 26 06:53:43 iMac kernel: nouveau 0000:03:00.0: fifo: CACHE_ERROR - ch 5 [Xorg[2662]] subc 0 mthd 0060 data beef0201 Jan 26 06:53:47 iMac kernel: nouveau 0000:03:00.0: fifo: CACHE_ERROR - ch 5 [Xorg[2662]] subc 0 mthd 0060 data beef0201 Jan 26 06:54:29 iMac (insights)[5776]: ubuntu-insights-upload.service: Failed to set up mount namespacing: /root/.config: No such file or directory Jan 26 06:54:29 iMac (insights)[5776]: ubuntu-insights-upload.service: Failed at step NAMESPACE spawning /usr/bin/ubuntu-insights: No such file or directory Jan 26 06:54:29 iMac (insights)[5774]: ubuntu-insights-collect.service: Failed to set up mount namespacing: /root/.config: No such file or directory Jan 26 06:54:29 iMac (insights)[5774]: ubuntu-insights-collect.service: Failed at step NAMESPACE spawning /usr/bin/ubuntu-insights: No such file or directory Jan 26 06:54:29 iMac systemd[5746]: Failed to start ubuntu-insights-collect.service - "Collect platform report using Ubuntu Insights while respecting consent". Jan 26 06:54:29 iMac systemd[5746]: Failed to start ubuntu-insights-upload.service - "Upload collected and matured platform reports using Ubuntu Insights while respecting consent". and dmesg in case it's helpful: [ 3660.076159] audit: type=1400 audit(1769184511.867:726): apparmor="DENIED" operation="open" class="file" profile="snap.firefox.firefox" name="/proc/pressure/memory" pid=3786 comm="MemoryPoller" requested_mask="r" denied_mask="r" fsuid=1000 ouid=0 [ 3665.240300] audit: type=1400 audit(1769184517.032:727): apparmor="DENIED" operation="open" class="file" profile="snap.firefox.firefox" name="/proc/pressure/memory" pid=3786 comm="MemoryPoller" requested_mask="r" denied_mask="r" fsuid=1000 ouid=0 [ 3670.266854] audit: type=1400 audit(1769184522.055:728): apparmor="DENIED" operation="open" class="file" profile="snap.firefox.firefox" name="/proc/pressure/memory" pid=3786 comm="MemoryPoller" requested_mask="r" denied_mask="r" fsuid=1000 ouid=0 [ 3677.255416] [UFW BLOCK] IN=enp0s10 OUT= MAC=33:33:00:00:00:01:b4:fb:e4:49:da:8e:86:dd SRC=fe80:0000:0000:0000:b6fb:e4ff:fe49:da8e DST=ff02:0000:0000:0000:0000:0000:0000:0001 LEN=333 TC=0 HOPLIMIT=1 FLOWLBL=129741 PROTO=UDP SPT=48925 DPT=10001 LEN=293 [ 3697.496321] [UFW BLOCK] IN=enp0s10 OUT= MAC=33:33:00:00:00:01:b4:fb:e4:49:da:8e:86:dd SRC=fe80:0000:0000:0000:b6fb:e4ff:fe49:da8e DST=ff02:0000:0000:0000:0000:0000:0000:0001 LEN=333 TC=0 HOPLIMIT=1 FLOWLBL=799136 PROTO=UDP SPT=45370 DPT=10001 LEN=293 [ 3709.588843] audit: type=1400 audit(1769184561.380:729): apparmor="DENIED" operation="open" class="file" profile="snap.firefox.firefox" name="/proc/pressure/memory" pid=3786 comm="MemoryPoller" requested_mask="r" denied_mask="r" fsuid=1000 ouid=0 [ 3714.796112] audit: type=1400 audit(1769184566.587:730): apparmor="DENIED" operation="open" class="file" profile="snap.firefox.firefox" name="/proc/pressure/memory" pid=3786 comm="MemoryPoller" requested_mask="r" denied_mask="r" fsuid=1000 ouid=0 [ 3717.497400] [UFW BLOCK] IN=enp0s10 OUT= MAC=33:33:00:00:00:01:b4:fb:e4:49:da:8e:86:dd SRC=fe80:0000:0000:0000:b6fb:e4ff:fe49:da8e DST=ff02:0000:0000:0000:0000:0000:0000:0001 LEN=333 TC=0 HOPLIMIT=1 FLOWLBL=296062 PROTO=UDP SPT=43701 DPT=10001 LEN=293 [ 3719.796950] audit: type=1400 audit(1769184571.588:731): apparmor="DENIED" operation="open" class="file" profile="snap.firefox.firefox" name="/proc/pressure/memory" pid=3786 comm="MemoryPoller" requested_mask="r" denied_mask="r" fsuid=1000 ouid=0 [ 3724.797348] audit: type=1400 audit(1769184576.590:732): apparmor="DENIED" operation="open" class="file" profile="snap.firefox.firefox" name="/proc/pressure/memory" pid=3786 comm="MemoryPoller" requested_mask="r" denied_mask="r" fsuid=1000 ouid=0 [ 3729.797805] audit: type=1400 audit(1769184581.590:733): apparmor="DENIED" operation="open" class="file" profile="snap.firefox.firefox" name="/proc/pressure/memory" pid=3786 comm="MemoryPoller" requested_mask="r" denied_mask="r" fsuid=1000 ouid=0 [ 3735.188047] audit: type=1400 audit(1769184586.979:734): apparmor="DENIED" operation="open" class="file" profile="snap.firefox.firefox" name="/proc/pressure/memory" pid=3786 comm="MemoryPoller" requested_mask="r" denied_mask="r" fsuid=1000 ouid=0 [ 3737.813387] [UFW BLOCK] IN=enp0s10 OUT= MAC=33:33:00:00:00:01:b4:fb:e4:49:da:8e:86:dd SRC=fe80:0000:0000:0000:b6fb:e4ff:fe49:da8e DST=ff02:0000:0000:0000:0000:0000:0000:0001 LEN=333 TC=0 HOPLIMIT=1 FLOWLBL=896940 PROTO=UDP SPT=34004 DPT=10001 LEN=293 [ 3743.827053] audit: type=1400 audit(1769184595.618:735): apparmor="DENIED" operation="open" class="file" profile="snap.firefox.firefox" name="/proc/pressure/memory" pid=3786 comm="MemoryPoller" requested_mask="r" denied_mask="r" fsuid=1000 ouid=0 [ 3748.903557] audit: type=1400 audit(1769184600.695:736): apparmor="DENIED" operation="open" class="file" profile="snap.firefox.firefox" name="/proc/pressure/memory" pid=3786 comm="MemoryPoller" requested_mask="r" denied_mask="r" fsuid=1000 ouid=0 [ 3758.046214] [UFW BLOCK] IN=enp0s10 OUT= MAC=33:33:00:00:00:01:b4:fb:e4:49:da:8e:86:dd SRC=fe80:0000:0000:0000:b6fb:e4ff:fe49:da8e DST=ff02:0000:0000:0000:0000:0000:0000:0001 LEN=333 TC=0 HOPLIMIT=1 FLOWLBL=288283 PROTO=UDP SPT=34144 DPT=10001 LEN=293 [ 3764.547396] audit: type=1400 audit(1769184616.339:737): apparmor="DENIED" operation="open" class="file" profile="snap.firefox.firefox" name="/proc/pressure/memory" pid=3786 comm="MemoryPoller" requested_mask="r" denied_mask="r" fsuid=1000 ouid=0 [ 3778.045255] [UFW BLOCK] IN=enp0s10 OUT= MAC=33:33:00:00:00:01:b4:fb:e4:49:da:8e:86:dd SRC=fe80:0000:0000:0000:b6fb:e4ff:fe49:da8e DST=ff02:0000:0000:0000:0000:0000:0000:0001 LEN=333 TC=0 HOPLIMIT=1 FLOWLBL=389191 PROTO=UDP SPT=33872 DPT=10001 LEN=293 (END) Thanks -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2138586 Title: [nouveau] Graphics corruption on GeForce 9400 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2138586/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
