Public bug reported:
Binary package hint: gdm
I have an old Sony laptop with an Intel graphics chip, using the current Ubuntu
8.04. usplash is disabled, so the boot process happens in text mode. Recently I
have reduced the X color depth to 16, because the Xfce terminal doesn't work
otherwise. Since then, this bug appears: When switching to graphics mode for
the GDM greeter, the display changes in three stages: first there is a random
noise/garbage display, like old TVs did show when there was no station tuned
in. Then the background color is set to blue for the Xfce style greeter, and
then the greeter/login screen appears. The first two stages take maybe half a
second each.
Before reducing the color depth, the first stage wasn't shown, the display was
garbage-free.
Here's the output of lspci:
00:00.0 Host bridge: Intel Corporation 82815 815 Chipset Host Bridge and Memory
Controller Hub (rev 11)
00:02.0 VGA compatible controller: Intel Corporation 82815 Chipset Graphics
Controller (CGC) (rev 11)
00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev 03)
00:1f.0 ISA bridge: Intel Corporation 82801BAM ISA Bridge (LPC) (rev 03)
00:1f.1 IDE interface: Intel Corporation 82801BAM IDE U100 Controller (rev 03)
00:1f.2 USB Controller: Intel Corporation 82801BA/BAM USB Controller #1 (rev 03)
00:1f.3 SMBus: Intel Corporation 82801BA/BAM SMBus Controller (rev 03)
00:1f.4 USB Controller: Intel Corporation 82801BA/BAM USB Controller #1 (rev 03)
00:1f.5 Multimedia audio controller: Intel Corporation 82801BA/BAM AC'97 Audio
Controller (rev 03)
00:1f.6 Modem: Intel Corporation 82801BA/BAM AC'97 Modem Controller (rev 03)
01:00.0 FireWire (IEEE 1394): Texas Instruments TSB43AB22/A IEEE-1394a-2000
Controller (PHY/Link)
01:02.0 CardBus bridge: Ricoh Co Ltd RL5c475 (rev 80)
01:05.0 CardBus bridge: Texas Instruments PCI1410 PC card Cardbus Controller
(rev 01)
01:08.0 Ethernet controller: Intel Corporation 82801BA/BAM/CA/CAM Ethernet
Controller (rev 03)
** Affects: gdm (Ubuntu)
Importance: Undecided
Status: New
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garbage screen on startup
https://bugs.launchpad.net/bugs/232299
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