ubuntu-x-swat team mailing list archive

[Tom Fogal <746174@xxxxxxxxxxxxxxxxxx>]

Public bug reported:

Binary package hint: xorg

I just got a Macbook Air and tried to install Ubuntu on it.  Booting up
the main install disk resulted in some crazy screen corruption, and the
left inch and a half or so was completely useless, since it did not
appear to update other than randomly moving bits (described below).

It is hard to describe.  It looked as if I had a normal desktop, but
overlayed on top of it was a series of 3cm vertical 'bands'.  There was
a staircasing effect between bands, as a small horizontal line connected
them but fell between successive bands.  On top of all this, pixels
seemed to 'move' awkwardly, like they were dancing around after too many
beers.  If I had to guess, I would say my video card and display device
disagreed on the resolution, and on top of that somebody Snow Crashed my
desktop.

Switching back to the console via ctrl-alt-f1 does not fix the problem;
my console was messed up in similar ways, though it looks more like just
plain Snow Crash then.  There was no color in the console, of course, so
I guess it just must be hard to see any banding artifacts, even if they
are still there.

I guess is the wrong place to mention it, but as a side note: the xorg
folks semi-recently made "DontZap" the default, i.e. disabled ctrl-alt-
backspace.  Please make it the default on Ubuntu, it's a real pain to
debug this kind of thing when you can't kill X.

The fix is simple: remove "quiet splash" from the grub boot lines.
Everything works then -- with both the nvidia proprietary drivers and
nouveau.

It might be important to note that my screen seemed fine until X started
up, so it seems to be some poor interaction between the splash screen (I
guess) and X's KMS?

This is 10.10, maverick.  I didn't try an update after installing from
the CD, because it was too difficult to see what I was typing.

ProblemType: Bug
DistroRelease: Ubuntu 10.10
Package: xorg 1:7.5+6ubuntu3
ProcVersionSignature: Ubuntu 2.6.35-28.49-generic 2.6.35.11
Uname: Linux 2.6.35-28-generic x86_64
NonfreeKernelModules: nvidia wl
.proc.driver.nvidia.version:
 NVRM version: NVIDIA UNIX x86_64 Kernel Module  260.19.06  Mon Sep 13 04:29:19 PDT 2010
 GCC version:  gcc version 4.4.5 (Ubuntu/Linaro 4.4.4-14ubuntu5)
Architecture: amd64
Date: Wed Mar 30 19:54:28 2011
DkmsStatus:
 bcmwl, 5.60.48.36+bdcom, 2.6.35-28-generic, x86_64: installed 
 bcmwl, 5.60.48.36+bdcom, 2.6.35-22-generic, x86_64: installed 
 nvidia-current, 260.19.06, 2.6.35-28-generic, x86_64: installed 
 nvidia-current, 260.19.06, 2.6.35-22-generic, x86_64: installed
InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release amd64 (20101007)
MachineType: Apple Inc. MacBookAir3,1
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.35-28-generic root=UUID=f2123c85-84bb-45ca-93f3-61e22edb3523 ro
ProcEnviron:
 LANG=en_US.utf8
 SHELL=/bin/bash
SourcePackage: xorg
Symptom: display
dmi.bios.date: 11/18/10
dmi.bios.vendor: Apple Inc.
dmi.bios.version: MBA31.88Z.0061.B01.1011181342
dmi.board.asset.tag: Base Board Asset Tag#
dmi.board.name: Mac-942452F5819B1C1B
dmi.board.vendor: Apple Inc.
dmi.board.version: 1.0
dmi.chassis.type: 10
dmi.chassis.vendor: Apple Inc.
dmi.chassis.version: Mac-942452F5819B1C1B
dmi.modalias: dmi:bvnAppleInc.:bvrMBA31.88Z.0061.B01.1011181342:bd11/18/10:svnAppleInc.:pnMacBookAir3,1:pvr1.0:rvnAppleInc.:rnMac-942452F5819B1C1B:rvr1.0:cvnAppleInc.:ct10:cvrMac-942452F5819B1C1B:
dmi.product.name: MacBookAir3,1
dmi.product.version: 1.0
dmi.sys.vendor: Apple Inc.
system:
 distro:             Ubuntu
 codename:           maverick
 architecture:       x86_64
 kernel:             2.6.35-28-generic

** Affects: xorg (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug corruption maverick

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https://bugs.launchpad.net/bugs/746174

Title:
  screen corruption with "quiet splash" on macbook air (nvidia 320M)