Comment 7 for bug 250062

I still get these issues in Jaunty.

Weird lines across the screen when scrolling, black bars also appear when scrolling in certain applications. Seems that the addition of an external monitor may cause this issue. I will test further and report back.

uname -a
Linux sy001428 2.6.28-11-generic #42-Ubuntu SMP Fri Apr 17 01:57:59 UTC 2009 i686 GNU/Linux

lspci -v
00:00.0 Host bridge: Intel Corporation Mobile 945GM/PM/GMS, 943/940GML and 945GT Express Memory Controller Hub (rev 03)
 Subsystem: Lenovo Device 2017
 Flags: bus master, fast devsel, latency 0
 Capabilities: [e0] Vendor Specific Information <?>
 Kernel driver in use: agpgart-intel
 Kernel modules: intel-agp

00:02.0 VGA compatible controller: Intel Corporation Mobile 945GM/GMS, 943/940GML Express Integrated Graphics Controller (rev 03)
 Subsystem: Lenovo Device 201a
 Flags: bus master, fast devsel, latency 0, IRQ 16
 Memory at ee100000 (32-bit, non-prefetchable) [size=512K]
 I/O ports at 1800 [size=8]
 Memory at d0000000 (32-bit, prefetchable) [size=256M]
 Memory at ee200000 (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

00:02.1 Display controller: Intel Corporation Mobile 945GM/GMS/GME, 943/940GML Express Integrated Graphics Controller (rev 03)
 Subsystem: Lenovo Device 201a
 Flags: fast devsel
 Memory at ee180000 (32-bit, non-prefetchable) [size=512K]
 Capabilities: [d0] Power Management version 2

xorg.conf is pretty simple.

/etc/X11/xorg.conf

Section "Screen"
 Identifier "Configured Screen Device"
 Device "Configured Video Device"
 SubSection "Display"
  Virtual 2048 768
 EndSubSection
EndSection

Section "Device"
 Identifier "Configured Video Device"
EndSection