FS#51441 - [linux] 4.8.2 Screen flicker on multi monitor
Attached to Project:
Arch Linux
Opened by Tom Ebeling (Bollie) - Wednesday, 19 October 2016, 11:30 GMT
Last edited by Andreas Radke (AndyRTR) - Sunday, 27 February 2022, 10:41 GMT
Opened by Tom Ebeling (Bollie) - Wednesday, 19 October 2016, 11:30 GMT
Last edited by Andreas Radke (AndyRTR) - Sunday, 27 February 2022, 10:41 GMT
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Details
Description:
Since the upgrade to 4.8.2-1 my external monitors switch off whenever I hit CTRL+C in a gnome terminal or rapidly shove the mouse from one monitor to the other. This is exactly the beviour described here: https://bbs.archlinux.org/viewtopic.php?id=208427 Additional info: * package version(s) linux 4.8.2-1 System is a HP HP EliteBook 1030 G1/80FB, BIOS N86 Ver. 01.02 05/06/2016 with two external monitors attached via a docking station using Display Port. * config and/or log files etc. Occassional dmesg output: [ 39.503870] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe C FIFO underrun [ 39.503889] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe B FIFO underrun [ 48.279747] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO underrun [ 970.278645] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe B FIFO underrun Steps to reproduce: - open gnome-terminal and hit ctrl+C |
This task depends upon
Closed by Andreas Radke (AndyRTR)
Sunday, 27 February 2022, 10:41 GMT
Reason for closing: None
Additional comments about closing: No response in years. Let's assume fixed upstream.
Sunday, 27 February 2022, 10:41 GMT
Reason for closing: None
Additional comments about closing: No response in years. Let's assume fixed upstream.
I'm gonna downgrade the kernel, so I'll be able to work again.
EDIT:
Before I downgraded to 4.7.6-1, I also tried Wayland. The error still occurs, but only occassionally, when moving the mouse from one screen to the other. Now, I'm back on the old kernel running Xorg and everything works perfectly.
But it's so rare, that it doesn't get annoying.
So anything that happened between the current official 4.8.2-1 and linux-mainline (4.9.0-rc1) seems to have improved the performance of the intel drm-stuff.