Public bug reported:
Graphics: NVIDIA GeForce4 420 Go
switching to another virtual terminal (Ctrl+Alt (left) + F1) and back
(Ctrl+Alt (left) + F7) restores the image.
I managed to fix it completely by editing /etc/powersave/sleep and
adding:
SUSPEND2DISK_SWITCH_VT="yes"
SUSPEND2RAM_SWITCH_VT="yes"
** Affects: powersave (Ubuntu)
Importance: Undecided
Status: Unconfirmed
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[edgy] blank screen after resume from sleep
https://launchpad.net/bugs/67831
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