ACER ASPIRE 4736z display problems

[proudchild]

Hello guys, i tried like 3 times installing ubuntu on my notebook and i get a wierd problem with my default notebook monitor, it get really dark, and i cant see squad, i thout it would be a problem with the ubuntu 11.04 live, but no, i tried fedora 15, centos 5.6 debian, all of those make the display goes off as soon as the X11 start, and i use xrandr and i dont get a display list, but when i plug a vga monitor i get a "mirror" image of my desktop fine, i really need help getting rid of micro$oft window$...


thanks for the help in advance.

UPDATE: PROBLEM SOLVED

[Toz]

Try appending the kernel parameter acpi_osi=Linux to the kernel line after the words "quiet splash" but within the quotes. Something like "quiet splash acpi_osi=Linux"

To test, see:https://help.ubuntu.com/community/Gr...0During%20Boot

[Blasphemist]

The parameter mentioned needs this syntax.

acpi_osi=\"Linux\"

This allows the parser to correctly interpret the parameter and what you'll then see on the line in Grub2 is

acpi_osi=Linux

The back slashes are escape characters.

[Toz]

So then quotes in quotes?

"quiet splash acpi_osi=\"Linux\""

Seems awkward.

[Blasphemist]

Yes, here is the line you edit in /etc/default/grub

GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi_osi=\"Linux\""

[Toz]

Oh. It parses it out to acpi_osi="Linux"
Interesting.

[proudchild]

oh! ill try those ones, i am currently using a vmware machine under windows to play ubuntu 11.04, but it sucks pretty hard, thanks guys!

[proudchild]

Good news everyone [by professor putricide]

i finally managed to get through the problem
hint for those with similar issues
together with the acpi_osi=Linux
also put acpi_backlight=vendor

then use the default keyboard keys to change the brightness, it might get ackward at first, but you get through it...

[Toz]

Glad to hear. Please mark this thread as solved.

[gabak]

hi
i saw this forum i got the same problem but i know how to edit /boot/grub/grub.cfg but i dont know where to put that line you said about adding the thing for the kernel.