I resolve this problem.
I use a DP line replace the HDMI line, the problem is disappear.
** Changed in: linux (Ubuntu)
Status: Incomplete => Fix Released
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https://bugs.launchpad.net/bugs/1916573
Title:
displayer can not wake up from sleeping.
Status in linux package in Ubuntu:
Fix Released
Bug description:
os system: ubuntu 20.04.2 LTS
when I press the keyboard, I saw new log from ssh terminal.
/var/log/kern.log
Feb 23 17:31:56 shaozj-HPDesk kernel: [23628.303887] [drm:lspcon_wait_mode
[i915]] *ERROR* LSPCON mode hasn't settled
Feb 23 17:31:56 shaozj-HPDesk kernel: [23628.307888] i915 0000:00:02.0: [drm]
*ERROR* Link Training Unsuccessful
Feb 23 17:32:48 shaozj-HPDesk kernel: [23679.346636] [drm:lspcon_wait_mode
[i915]] *ERROR* LSPCON mode hasn't settled
Feb 23 17:32:48 shaozj-HPDesk kernel: [23679.350790] i915 0000:00:02.0: [drm]
*ERROR* Link Training Unsuccessful
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