** Description changed: Since upgrading to kernel 5.0.0-23-generic, the framebuffer tty is unusable due to flickering like crazy, showing green rectangles instead of a console. X.Org and Plymouth still display correctly. In addition, the following message appears in dmesg: [ 9191.868497] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO underrun [ 9687.876764] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO underrun My GPU is Intel UHD Graphics 620. The problem does not occur on the 4.18.0-25-generic kernel, which implies this might be a problem with the kernel, or the i915 module. Description: Ubuntu 18.04.2 LTS Release: 18.04 + Architecture: amd64 + linux-generic-hwe-18.04 version 5.0.0.23.80 In case this is relevant: xserver-xorg-video-intel-hwe-18.04 version 2:2.99.917+git20171229-1ubuntu1~18.04.1 xserver-xorg-video-fbdev-hwe-18.04 version 1:0.5.0-1ubuntu1~18.04.1
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1838979 Title: [i915] framebuffer console flickers on 5.0.0 kernel To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-hwe/+bug/1838979/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
