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[Bug 448911] Re: [CLE266] Console screens unusable, filled with random colors

 

This bug has reappeared today, with the most recent updates to Lucid.
Instead of seeing random small colored pixel blocks, I now see a
magnified portion of the X screen background (or the background for the
login screen), when switching to a tty with CTL-ALT-F1 ...CTL-ALT-F6. I
can login and type into the screen, but no text echos onto the screen,
though a large block cursor appears. I can switch back to X with ALT-F1,
open a shell window, and see that I indeed was able to log in. I suspect
the problem is in the frame-buffer drivers, such as viafb and vt8623fb.
This is similar to some aspects of Bug #49553, on another system with a
different VIA chipset.

The X display (Gnome) appears Ok.

Screen hardware:

from lspci -vvk:
01:00.0 VGA compatible controller: VIA Technologies, Inc. VT8623 [Apollo CLE266] integrated CastleRock graphics (rev 03)
	Subsystem: VIA Technologies, Inc. VT8623 [Apollo CLE266] integrated CastleRock graphics
	Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
	Status: Cap+ 66MHz+ UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 32 (500ns min)
	Interrupt: pin A routed to IRQ 11
	Region 0: Memory at e4000000 (32-bit, prefetchable) [size=64M]
	Region 1: Memory at e8000000 (32-bit, non-prefetchable) [size=16M]
	[virtual] Expansion ROM at e9000000 [disabled] [size=64K]
	Capabilities: <access denied>
	Kernel driver in use: viafb
	Kernel modules: vt8623fb, viafb

Ubuntu version and kernel version
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=10.04
DISTRIB_CODENAME=lucid
DISTRIB_DESCRIPTION="Ubuntu lucid (development branch)"
Linux lightning 2.6.32-12-generic #16-Ubuntu SMP Wed Jan 27 18:34:19 UTC 2010 i686 GNU/Linux
model name	: VIA Samuel 2
cpu MHz		: 798.000

I'm attaching Xorg.0.log


** Attachment added: "Xorg.0.log"
   http://launchpadlibrarian.net/38716055/Xorg.0.log

-- 
[CLE266] Console screens unusable, filled with random colors
https://bugs.launchpad.net/bugs/448911
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References