Using the `mainline` utility from https://launchpad.net/~cappelikan/+archive/ubuntu/ppa I now installed a mainline kernel version 5.4.28-050428-generic - the latest currently available in the 5.4 series.
Using this kernel, I don't experience this issue at all - no hangs, not even during the use of IntelliJ. I tested it for a couple of hours in which I normally had dozens of hangs. If it helps diagnosing this issue, I'm willing to bisect the issue with various mainline versions between 5.3.0-47 and 5.4.28. Let me know if this has any value. For now I'm sticking with this new kernel version. Not sure if related - I did have an additional issue with the graphics. Directly after boot, but also after suspend, during connecting to wifi, I'd get loads of the `iwlwifi 0000:3b:00.0: Unhandled alg: 0x71b` messages and the display would also freeze for couple of seconds (10 - 20). During this specific freeze, the mouse pointer would also be unresponsive. This would be accompanied by loads of messages in the kernel log like: nouveau 0000:01:00.0: fifo: SCHED_ERROR 08 [] I managed to fix this by adding nouveau.modeset=0 to the kernel command line. Like I said, I don't know if these are related. Does the i915 GPU hang also occur on laptops without a nvidia gpu? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1871867 Title: i915: GPU HANG: ecode 9:0:0x00000000, hang on rcs0 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1871867/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
