My experience with Acer TravelMate 5335 (video Intel GMA 4500M) and
ubuntu 11.04:

SOLUTION 1 (bad):
renounce to graphic acceleration and add "nomodeset" into boot (typeing "e" on 
grub start) or in GRUB_CMDLINE_LINUX_DEFAULT option into "/etc/default/grub".
at least you can boot without an external VGA monitor and try to solve

SOLUTION 2 (quiet bad):
try to install previous kernels like 2.6.35
(there is an italian debian experience at 
http://forum.debianizzati.org/viewtopic.php?t=43209&p=132402)

SOLUTION 3 (less bed):
add the following commad into "/etc/rc.local" :
setpci -s 00:02.0 F4.B=00
The kernel bug remains still there but your monitor will turn on boot before 
loading x server.
But the game "tux racing" turns again the monitor off. Hibernating too (someone 
say, haven't tried yet)

I don't know if it is a linux bug or an ubuntu bug, surely this interests 
debian distributions too.
sorry for my english.
good luck.

Ale

-- 
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/740893

Title:
  Kernel 2.6.38-7 completely dims screen on Intel GMA 4500M

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/740893/+subscriptions

-- 
ubuntu-bugs mailing list
ubuntu-bugs@lists.ubuntu.com
https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs

Reply via email to