There's a hardware connection problem which seems to come first in some
cases:
cze 23 15:35:36 jarek-Inspiron kernel: [drm]
perform_link_training_with_retries: Link(2) training attempt 1 of 4 failed @
rate(10) x lane(2) : fail reason:(1)
...
cze 23 15:35:36 jarek-Inspiron kernel: [drm]
perform_link_training_with_retries: Link(2) training attempt 2 of 4 failed @
rate(10) x lane(2) : fail reason:(1)
cze 23 15:35:37 jarek-Inspiron kernel: [drm]
perform_link_training_with_retries: Link(2) training attempt 3 of 4 failed @
rate(10) x lane(2) : fail reason:(1)
...
cze 23 15:35:37 jarek-Inspiron kernel: [drm] enabling link 2 failed: 15
cze 23 15:35:38 jarek-Inspiron gnome-shell[3512]:
meta_monitor_manager_get_logical_monitor_from_number: assertion '(unsigned int)
number < g_list_length (manager->logical_monitors)' failed
cze 23 15:35:38 jarek-Inspiron gnome-shell[3512]:
meta_workspace_get_work_area_for_monitor: assertion 'logical_monitor != NULL'
failed
cze 23 15:35:38 jarek-Inspiron gnome-shell[3512]:
meta_monitor_manager_get_logical_monitor_from_number: assertion '(unsigned int)
number < g_list_length (manager->logical_monitors)' failed
cze 23 15:35:38 jarek-Inspiron gnome-shell[3512]:
meta_workspace_get_work_area_for_monitor: assertion 'logical_monitor != NULL'
failed
cze 23 15:35:38 jarek-Inspiron gnome-shell[3512]:
meta_display_get_monitor_in_fullscreen: assertion 'monitor >= 0 && monitor <
n_logical_monitors' failed
cze 23 15:35:39 jarek-Inspiron gnome-shell[3512]: 0x3800080: Frame has assigned
frame counter but no frame drawn time
cze 23 15:35:39 jarek-Inspiron gnome-shell[3512]: 0x3800080: Frame has assigned
frame counter but no frame drawn time
cze 23 15:35:39 jarek-Inspiron gnome-shell[3512]: 0x3800080: Frame has assigned
frame counter but no frame drawn time
** Changed in: mutter (Ubuntu)
Status: Incomplete => New
** Summary changed:
- Screens go into flicker cycle after going blank with external monitor(s)
+ [amdgpu] Screens go into flicker cycle after going blank with external
monitor(s)
** Also affects: linux (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/2023647
Title:
[amdgpu] Screens go into flicker cycle after going blank with external
monitor(s)
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