Ubuntu
xserver-xorg-video-intel package

  1. Bug #221119
  2. Comment #28

Comment 28 for bug 221119

Revision history for this message
Sami Nieminen (sami-nieminen) wrote : Re: [gutsy, hardy, intrepid] Blank screen and (EE) intel(0): overrun on pipe B! on i945GM using intel driver

I also experience this bug on Intrepid (but it already occurred with Hardy also) with Lenovo X60 Tablet, which has the following chipset:

00:02.0 VGA compatible controller [0300]: Intel Corporation Mobile 945GM/GMS, 943/940GML Express Integrated Graphics Controller [8086:27a2] (rev 03)
        Subsystem: Lenovo Device [17aa:201a]

The way how I can always reproduce the blank screen:

1. Login with user A
2. Switch to user B
3. Try to switch back to user A
4. Blank screen with mouse pointer awaits

I tried to add second display on VGA connector which caused everything to work properly, no blank screen anymore.

On xorg logs I don't get "overrun on pipe" messages when the blank screen problem occurs. I can always ctrl-alt-backspace out from blank screen and relogin to get view back. With Hardy I didn't experience this problem when using i810 driver, but it occurred with intel driver already back then.