Since my upgrade from 19.04 to 19.10 my T430 is facing a similar problem with i915 fifo underruns:
The problem occurs by switching from user A to B. If user A is logged in and want to switch to another user B (e.g. admin), then after entering the credentials of the user B, the system hangs up. Sometimes the system does not hang up directly. In this case the lock screen pops up and if I try then to enter the credentials of user B again, then the system hangs up. If I enter the credentials of the former already logged in user A, then system does not hang up. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1550779 Title: [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO underrun To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1550779/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
