Display problems after resume with sandy bridge

[Ketil Malde]

I have a Lenovo x220, with SB graphics. After suspend and then resume, sometimes the display is not working entirely correctly. Typically, flash video will hang (although sound will be okay), and it will update when the window is resized, or similar action is taken. Also text will only display partially in terminals, xterm seems to be more prone to this than rxvt (which unfortunately doesn't support utf-8 properly), and also Emacs has become garbled.

Another suspend-resume cycle appears to put things back in order again. (Possibly this is caused by suspending with an external monitor connected, and resuming without it?)

[exactt (giesbert)]

In order for any developer to analyse the problem you have to run:

apport-collect 868715

in a terminal window.

good luck!

[Kevin Otte (nivex)]

It only happens intermittently, but when I suspend my X220 there is no display on resume. If I switch to vt 1, I do not see any text, but it will take a Ctrl-Alt-Del and reboot the machine somewhat cleanly. I'd be happy to do the apport-collect, but I cannot currently since I am not the submitter of this bug.

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Chris Wilson (ickle)]

Fixed in raring.