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[Robert Littlejohn <robert@xxxxxxxxxxxxxxxxxxx>]

Public bug reported:

Binary package hint: xorg

Briefly, I installed 10.04 from CD on older PC, was able to log into my
account but desktop did not display panels at top or bottom of screen,
so I could not launch any apps via GUI. Tried various things, finally
got it to display panels, now everything seems to be working except that
there are vertical strips about 3cm apart, seem to be 1-2 pixels wide,
that rapidly flicker. Would like to eliminate strips and flicker.

Here is more detail. Machine is custom made, about 8 years old, 512MB
ram, 40GB hard drive. Since I couldn't launch anything with the GUI, I
opened CLI terminal and determined the following. I ran lspci, found out
this about the video controller:

VGA compatible controller: Intel Corporation 82815 Chipset Graphics
Controller (CGC) (rev 02)

Monitor is Philips 190B (flat screen). I looked up specs on the web, and
found this:

Horiz Freq: 30-83 Khz
Vert Freq: 56-75 Hz

recommended mode: 1280x1024 @ 60Hz

Then I executed:
sudo DISPLAY=:0.0 xrandr -q:
got this output:

Screen 0: minimum 640 x 400, current 1280 x 1024, maximum 1280 x 1024
default connected 1280x1024+0+0 0mm x 0mm
1280x1024 60.0* 75.0
1280x960 60.0
1152x864 75.0 70.0 60.0
1024x768 75.0 70.0 60.0
832x624 75.0
800x600 75.0 72.0 60.0 56.0
640x480 75.0 73.0 67.0 60.0
720x400 70.0 

Then I found a sample xorg.conf file on the web, installed it, and tried
again.  I'm not an expert at this.  This time I did get the panels at
the top and bottom of the screen, everything seems ok except for the
vertical, blinking strips which are rather distracting.  So I read man
xorg.conf and tried to put more specific details in the xorg.conf file.
I did this one step at a time, testing each step, but never managed to
get rid of vertical strips.  My final xorg.conf file is this:

Section "Device"
Identifier "Configured Video Device"
Driver "intel"
EndSection

Section "Monitor"
Identifier "Configured Monitor"
VendorName "Philips"
ModelName "190B Flat Screen"
HorizSync 30-83
VertRefresh 56-75
DisplaySize 376.3 301.1
Modeline "1280x1024_60.00"  108.88  1280 1360 1496 1712  1024 1025 1028 1060  -H
Sync +Vsync
EndSection

Section "Screen"
Identifier "Default Screen"
Monitor "Configured Monitor"
Device "Configured Video Device"
DefaultDepth 24
SubSection "Display"
Viewport 0 0
Depth 24
Modes "1280x1024" "1024x768" "800x600"
EndSubSection
EndSection

I got the modeline from gtf (tried earlier with cvt with same results).

Here is some more information.  The flickering strips occur only at
1280x1024 resolution.  Also, during boot, two error messages appear:

error: no suitable mode found
error: unknown command 'terminal'

ProblemType: Bug
DistroRelease: Ubuntu 10.04
Package: xorg 1:7.5+5ubuntu1
ProcVersionSignature: Ubuntu 2.6.32-22.36-generic 2.6.32.11+drm33.2
Uname: Linux 2.6.32-22-generic i686
Architecture: i386
CurrentDmesg: [   24.828054] eth0: no IPv6 routers present
Date: Fri Jun 25 14:25:12 2010
DkmsStatus: Error: [Errno 2] No such file or directory
InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release i386 (20100429)
Lsusb:
 Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
 Bus 001 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.32-22-generic root=UUID=33f1eb9d-ac77-4a70-8a39-de7017c7521e ro quiet splash
ProcEnviron:
 PATH=(custom, user)
 LANG=en_US.utf8
 SHELL=/bin/bash
SourcePackage: xorg
dmi.bios.date: 09/21/2000
dmi.bios.vendor: Intel Corp.
dmi.bios.version: EA81510A.86A.0031.P07.0009211842
dmi.board.name: D815EEA
dmi.board.vendor: Intel Corporation
dmi.board.version: AAA10378-405
dmi.chassis.type: 2
dmi.modalias: dmi:bvnIntelCorp.:bvrEA81510A.86A.0031.P07.0009211842:bd09/21/2000:svn:pn:pvr:rvnIntelCorporation:rnD815EEA:rvrAAA10378-405:cvn:ct2:cvr:
glxinfo: Error: [Errno 2] No such file or directory
system:
 distro:             Ubuntu
 codename:           lucid
 architecture:       i686
 kernel:             2.6.32-22-generic

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


** Tags: apport-bug i386 lucid

-- 
video unusable after 10.04 installation
https://bugs.launchpad.net/bugs/598481
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