The link works okay for me.
So it sounds like this is an ACPI / Kernel issue rather than an Xorg
issue. I'll refile accordingly.
** Changed in: linux (Ubuntu)
Sourcepackagename: xserver-xorg-video-trident => linux
Importance: Undecided => Medium
Status: Incomplete => Triaged
** Summary changed:
- Change Toshiba Portege R100 screen brightness corrupts X resolution
+ acpi power state changes result in corrupted display [Toshiba Portege R100]
** Description changed:
- On my Toshiba Portege R100 laptop, with trident driver, any attempt to
- change the display brightness results in an incorrect resolution. The
- screen image is displayed too large by a factor of approximately 2, with
- only the top left quadrant of the desktop being visible. This is with
- Feisty Beta.
+ [Problem]
+ Toshiba Portege R100 hardware has broken ACPI for handling power state
changes (e.g. brightness settings), resulting in a corrupted display. It
requires changes to kernel parameters to make the issue go away, as described
in this article:
+ http://ubuntuforums.org/archive/index.php/t-533793.html
+
+ [Original Report]
+ On my Toshiba Portege R100 laptop, with trident driver, any attempt to change
the display brightness results in an incorrect resolution. The screen image is
displayed too large by a factor of approximately 2, with only the top left
quadrant of the desktop being visible. This is with Feisty Beta.
This is particularly troublesome because by default the screen
brightness is set after logging in... And also when switching between
battery and AC.
As virtual consoles aren't working either, the only workaround when this
happens is to kill X with Ctrl-Alt-Backspace and log in again.
Repeat by:
Boot up and log in,
or,
echo 'brightness: 6' > /proc/acpi/toshiba/lcd # assuming brighness
not already at 6
** Also affects: acpi-support (Ubuntu)
Importance: Undecided
Status: New
--
acpi power state changes result in corrupted display [Toshiba Portege R100]
https://bugs.launchpad.net/bugs/104745
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