Ubuntu
xserver-xorg-video-psb package

  1. Bug #972294
  2. Comment #6

Comment 6 for bug 972294

Revision history for this message
Luis Sanjuán (luisj-sanjuan) wrote :

More tests:

I've been able to reproduce the random behavior reported by @Svante. Sometimes the native resolution mode of the monitor (1366x768) is recognized, sometimes it does not, and the system falls to 1024x768.

As a workaround I've created a typical screen.conf section in /usr/share/X11/xorg.conf.d

Section "Screen"
    Identifier "Default Screen"
    Monitor " Configured Monitor"
    Device " Configured Video Device"
        SubSection "Display"
            Virtual 1366 768
        EndSubSection
EndSection

From then on I have not experienced the problem. Being a random behaviour it is dificcult to confirm the efficacy of this fix without a more thoroughly examination of log files and so on.

As to flickering, I think it is much less noticeable at reduced backlight levels. Backlight control is not activated by default in these Vaio machines. It must be pass a paramater from grub. I have config my grub file (/etc/default/grub) to do this:

GRUB_CMDLINE_LINUX_DEFAULT="pci=noacpi"