I'm trying to figure out how to force my gfx card to use i915 kernel driver. My card according to lspci is Intel Corporation Mobile 4 Series Chipset Integrated Graphics Controller (rev 07).

The reason I want this is because all videos play in slow motion. I asked around and was told to look at lspci -k output. It says VGA is not using any kernel drivers. I booted my computer off LiveCD, looked at lspci -k output and saw the line Kernel driver in use: i915, so that is why I want to force it. lsmod on LiveCD lists i915 with a 4 next to it, whereas there is a 0 next to it on the installed system. I am on 14.04 at the moment, and this problem with the installation of 14.04. Please help me.

$ lspci -k
Display controller: Intel Corporation Mobile 4 Series Chipset Integrated Graphics Controller (rev 07) 
Subsystem: Lenovo Device 20e4 

$ lsmod | grep i915: 
i915 705396 0 
i2c_algo_bit 13197 1 i915 
drm_kms_helper 46907 1 i915 
video 18903 1 i915 
drm 243792 2 i915

These are on the installed system.

  • Please show the output of the commands instead of describing it. – terdon May 4 '14 at 10:56
  • Please edit your question to add extra info, it is hard to read and easy to miss in the comments. You can then ping the user who asked for the information by leaving a comment and including a @ before their username. For example, to ping me: @terdon. – terdon May 4 '14 at 11:55
  • @terdon I reformatted my post. – Tolga Ozses May 5 '14 at 8:41
  • Thanks. Your post is still confusing though. When you say "Live system", do you mean the installed system or the Live CD one? I assume you mean installed and have edited accordingly. – terdon May 5 '14 at 8:59
  • 1
    @Sneetsher as I said in my own answer, I was helped IRC about it. Turns out, I had forgotten a nomodeset in /etc/default/grub. I took that out and did an update-grub. voilá! Thanks for the reply though- – Tolga Ozses May 13 '14 at 7:55

TJ- on IRC made me realise I had put a nomodeset in /etc/default/grub. I removed that and did a sudo update-grub, voila!

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