Ubuntu
unity package

  1. Bug #753971
  2. Comment #8

Comment 8 for bug 753971

Revision history for this message
Daniel Manrique (roadmr) wrote : Re: Display garbled upon restoring original resolution or connecting external displays

Hi Brian and Bryce, thanks so much for looking at this problem.

Here's what I found (using Bryce's letters):

c. The problem still appears if I use xrandr to switch to another resolution (say 1024x768) and then back to the default (1366x768). So apparently no problem with gnome-display-properties.

b. (and as per Brian's suggestion) If I use any of the Ubuntu classic sessions (either effects or no effects), the problem does NOT appear, so this would appear to affect only systems running Unity.

d. We only noticed it when we tested beta1, where we ran the full suite of manual tests with visual confirmation. The only thing I can say for sure is that it didn't happen on Maverick :)

a. I did these verifications on the Dell 1545 where the original bug report was generated. It uses the radeon driver and has this card:
01:00.0 VGA compatible controller [0300]: ATI Technologies Inc M92 LP [Mobility Radeon HD 4300 Series] [1002:9552] (prog-if 00 [VGA controller])

I also tested on the HP ProBook 6550b, with the intel driver (Arrandale chipset), lspci says:
VGA compatible controller [0300]: Intel Corporation Core Processor Integrated Graphics Controller [8086:0046] (rev 02) (prog-if 00 [VGA controller])

I'll get working on the table for point "a" and post it back as soon as I have it.

Thanks for your help!