Ubuntu
unity-greeter package

  1. Bug #945450
  2. Comment #2

Comment 2 for bug 945450

Revision history for this message
Alex Bachmeier (cebalrai) wrote :

I'm not quite convinced this is a duplicate of those bugs. I have the same problem on all of my machines with:

---# lspci |grep VGA
00:02.0 VGA compatible controller: Intel Corporation 4 Series Chipset Integrated Graphics Controller (rev 03)

Sandy bridge GPUs on the other hand are smooth as butter:

---# lspci |grep VGA
00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller (rev 09)

while the Intel cards in the middle are a little choppy:
---# lspci -v |grep VGA
00:02.0 VGA compatible controller: Intel Corporation Core Processor Integrated Graphics Controller (rev 12) (prog-if 00 [VGA controller])

Since this bug gets better with increasing graphics power, there is either a bug with the intel driver and lightdm/unity-greeter or the performance of unity-greeter needs optimizations for this case.

Marking the bug as confirmed. If you need any traces/logs for these graphics cards, I'm glad to be of assistance.