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Yesterday I installed installed ubuntu 12.04 on my Acer aspire one D270-1838. Everything worked ok, except I couldn't adjust brightness, I fixed it changing:

GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi_backlight=vendor"

in grub.

The problem is when I closed the lid it suspended properly but trying to start it again it showed a crashed screen. I have read people with a similar problem but they report screen completely black, mine isn't. I wanted to upload an image of the screen but I don't have the reputation....

Something I can do to suspend my netboot and that works fine is type:

sudo pm-suspend --quirk-dpms-on

and it suspends correctly but without authentication, that's not a problem for me but it is tedious. Also, I can enter a virtual terminal with ALT+CTRL+F1 which works fine and kill X, this fixes the screen crash but also terminates my session. however there are sometimes that after the first try if I try to close the lid and open it up again, the screen stays on but black and I cant enter the virtual terminal.

I'm not tech saavy, but I hope you can direct me to a way of fixing this problem.

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1 Answer 1

Permanent activation of "--quirk-dpms-on"

$ sudo pm-suspend --quirk-dpms-on

This solves the problem for me too (thank you for the information).

To permanently activate the solution you have to set it up in /etc/pm/config.d/defaults.

I copied the default config file /usr/lib/pm-utils/defaults by typing:

$ sudo cp /usr/lib/pm-utils/defaults /etc/pm/config.d

After that I added the following line at the corresponding place in the file.

ADD_PARAMETERS="--quirk-dpms-on"

For details see the comments in the file or the manual page of pm-suspend.

have fun ;-)

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