I have this problem as well on a Dell Latitude D620. Lot's of buffer
underuns, and dual display with an external VGA is unusable - the
external VGA keeps on flicking on and off.
[EMAIL PROTECTED]:/var/log# dpkg -l | grep -i intel
rc 915resolution 0.5.3-1ubuntu1
resolution modification tool for Intel graphic chipset
ii wvdial 1.60.1+nmu2 PPP
dialer with built-in intelligence
ii xserver-xorg-video-i810 2:2.4.1-1ubuntu10
X.Org X server -- Intel i8xx, i9xx display driver
ii xserver-xorg-video-intel 2:2.4.1-1ubuntu10
X.Org X server -- Intel i8xx, i9xx display driver
lspci -vnn:
00:02.0 VGA compatible controller [0300]: Intel Corporation Mobile 945GM/GMS,
943/940GML Express Integrated Graphics Controller [8086:27a2] (rev 03)
Subsystem: Dell Device [1028:01c2]
Flags: bus master, fast devsel, latency 0, IRQ 16
Memory at eff00000 (32-bit, non-prefetchable) [size=512K]
I/O ports at eff8 [size=8]
Memory at d0000000 (32-bit, prefetchable) [size=256M]
Memory at efec0000 (32-bit, non-prefetchable) [size=256K]
Capabilities: [90] Message Signalled Interrupts: Mask- 64bit- Queue=0/0
Enable-
Capabilities: [d0] Power Management version 2
Kernel modules: intelfb
[EMAIL PROTECTED]:/var/log# uname -a
Linux psll09551 2.6.27-7-generic #1 SMP Fri Oct 24 06:42:44 UTC 2008 i686
GNU/Linux
Xorg.conf:
Section "Device"
Identifier "Configured Video Device"
EndSection
Section "Monitor"
Identifier "Configured Monitor"
EndSection
Section "Screen"
Identifier "Default Screen"
Monitor "Configured Monitor"
Device "Configured Video Device"
Subsection "Display"
Depth 24
Virtual 1440 1924
EndSubSection
EndSection
When running just on the panel display, it works OK ish, although some of the
desktop effects are very sluggish, I'm running KDE.
** Attachment added: "Xorg log"
http://launchpadlibrarian.net/19074468/Xorg.0.log
--
Flickering with version 2.4.0
https://bugs.launchpad.net/bugs/256142
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