External monitor turns off for short period of times / until moving mouse
Bug #1822854 reported by
Julian Andres Klode
This bug affects 1 person
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
linux (Ubuntu) |
Triaged
|
Low
|
Unassigned |
Bug Description
In disco; I have this issue where my external monitor (a ThinkVision P24h-10) connected to my ThinkPad T480s turns off for short times while actively working on the system. I noticed that if I don't move my mouse at all while it's off, it stays off.
The T480s is connected to the monitor via USB-C; the monitor provides DP, USB, and Power over that connection. When the display turns off, USB devices continue working.
I have attached /sys/debug/dri/0 output from when the monitor was off (a) vs on (b).
Other related bits:
* This also happens on HDMI, but much less often
* There are no log messages when the display turns on/off in the journal.
summary: |
External monitor turns off for short period of times / until moving - mouse + mouse when using kernel options i915.enable_gvt=1 intel_iommu=on |
no longer affects: | gnome-shell (Ubuntu) |
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