hwdriver_

X not working on upgrade from Ubuntu 10.04 on a Samsung Q45

Platform:
  • Samsung Q45
  • Ubuntu 10.10 Maverick
  • Intel Corporation Mobile GM965/GL960 Integrated Graphics Controller
  • Integrated Graphics Chipset: Intel(R) 965GM
  • Kernel driver: i915
Issue:
  • After upgrading from 9.10, X doesn't start any more. 
  • /var/log/Xorg.0.log says:
    (EE) intel(0): No kernel modesetting driver detected.
    (EE) Screen(s) found, but none have a usable configuration.
Cause: unknown

Solution:
  • Edit the file /etc/default/grub and add
    GRUB_CMDLINE_LINUX="i915.modeset=1"
  • Issue update-grub
  • Reboot


Fn+brightness keys do not work UNRESOLVED draft

Platform:
  • Samsung Q45
  • Ubuntu 10.10 Maverick
  • Intel Corporation Mobile GM965/GL960 Integrated Graphics Controller
  • Integrated Graphics Chipset: Intel(R) 965GM
  • Kernel driver: i915
Issue:
  • Some Fn-keys (brightness) do not work
  • The Samsung Q45 does not send key release events for several Fn-keys.
Cause: Samsung bios bug

Solution:

  • As the Q45 uses the same keycodes as the NC10, I extended the fix with the DMI information of my Q45, which works great on my machine, and finally lets the lcd brightness be adjusted via Fn-keys.

  • Add "acpi_backlight=vendor" option as GRUB_CMDLINE_LINUX in /etc/default/grub
  • Issue update-grub
  • Reboot


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