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I just recently purchased an Intel i7 4790k CPU and installed Xubuntu shortly after. A lot of things seem to work correctly however the HD 4600 of the 4790k seems to struggle a little bit. Moving window causes jitter and tearing.

Is there a way to fix this or at least see where the problem lies?

sudo lshw -C display output seems to be ok.

  *-display               
       description: VGA compatible controller
       product: Xeon E3-1200 v3/4th Gen Core Processor Integrated Graphics Controller
       vendor: Intel Corporation
       physical id: 2
       bus info: pci@0000:00:02.0
       version: 06
       width: 64 bits
       clock: 33MHz
       capabilities: msi pm vga_controller bus_master cap_list rom
       configuration: driver=i915 latency=0
       resources: irq:44 memory:df800000-dfbfffff memory:c0000000-cfffffff ioport:f000(size=64)
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  • Could you add please the output of sudo lshw -C display to your question?
    – Wilf
    Mar 13, 2015 at 19:32
  • @Wilf sure, I added it. the clock looks a little bit slow :\
    – TomTom
    Mar 13, 2015 at 19:38
  • nah just got a new i3 netbook with similar integrated graphics - works much better than my old i5 with AMD discrete.... Your answer below is probably due to the monitor or something if its refresh rates
    – Wilf
    Mar 13, 2015 at 21:10
  • No, the Intel HD 4600 seems to be not supported very well. But I fixed it now.
    – TomTom
    Mar 14, 2015 at 21:25

1 Answer 1

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1. Enable Synchronize drawing to the vertical blank

You can find this option under your System Settings -> Window Manager Tweaks -> Compositor if you have Xubuntu. I don't know where in other distros. This option basically means some kind of vertical synchronization when drawing.

2. Create & edit xorg.conf

Create /etc/X11/xorg.conf if it doesn't exit and add:

Section "Device"
    Identifier "Intel Graphics"
    Driver     "intel"
    Option     "AccelMethod"    "sna"
    Option     "TearFree"       "true" 
EndSection

3. If first 2 steps didn't work

While setting up a Nvidia Graphics Card for a friend I noticed that the xorg.conf is not always enough. Sometimes changing the compositor helps. In his case I switched the standard Xubuntu compositor to "compton". Things worked fine after that.

Restart and you should be fine.

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