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I have bad video performance in Loki. After some googling I found this hint: Cannot Install Intel Proprietary Graphics Driver and with some dirty trick (I put the Ubuntu 16.04 data in /etc/lsb-release file) installed the latest Intel video drivers.
Unfortunately after doing all this I see no change in performance.

Any hints?

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The Intel Graphics has some settings you can fine-tune to improve performance or powersavings.

Long story short, if you want the best performance create /etc/modprobe.d/i915.conf as root and add options i915 powersave=0 enable_rc6=0 enable_fbc=0 to it.

If you want more settings or a further understanding of this options just write on a terminal modinfo -p i915 .
Then, to add any extra setting just do it following the scheme of setting=number or setting=true/false (in case it's a boolean)

Source

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  • Thank you for answer. Unfortunately it doesn't work as proposed here. It seems that the reading of the intel manual us unavoidable...
    – avp
    Commented Nov 14, 2016 at 20:34
  • What isn't working exactly? The settings don't work or some work but some don't??
    – Maccer
    Commented Nov 14, 2016 at 21:12
  • I did a short test doing what you've written in this answer. There is no difference, the performance remains unacceptable. I did not dig the source at arch wiki so far. I hope I will find there anything helpful.
    – avp
    Commented Nov 15, 2016 at 9:31
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    Well, considering your CPU is from 2013 I'd say that installing the lastest intel drivers from their site is a bad idea. elementary OS has quite recent versions of everything related to graphics cards so I'm sure the problem doesn't come from that. I remember that in my laptop it was impossible to play 1080 60fps videos (from youtube using firefox) with an Intel Graphics HD 4000 but now it works just fine. I didn't update anything besides the updates that elementary pushes. If you have some time, the easiest solution would be installing elementary OS again.
    – Maccer
    Commented Nov 16, 2016 at 8:57
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    I have reinstalled Loki from scratch. The problem disappeared.
    – avp
    Commented Nov 18, 2016 at 17:13

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