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Offline musca

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intel graphics factsheet
« on: 2016/08/12, 17:03:02 »
Hello dear intel users,

let me give a general overview first:
  • The last stable release 2.21 of the intel driver is 3 years old and debian jessie is the only distro still shipping it.
  • The unreleased beta driver 2.99 is 1 ½ years old and git doesn't show much progress either.
  • The current driver defaults to SNA, users of older chipsets may want to try UXA.
As a result Debian and Ubuntu in xserver-xorg-core 2:1.18.3-2 have changed the autodetection to prefer the integrated modesetting driver over the intel driver, possibly causing performance degration.
[update:] Fedora 26/rawhide has integrated this patch from debian.

Now let me list some most recent issues with the intel beta driver:
  • intel developers forgot to add pciids for latest intel GPUs. (fixed in libdrm 2.4.68)
  • intel has tagged the beta driver as 2.99.918 in git but later withrawn the tag to 917. (Fix see below)
  • linux kernel 4.6 enabled Frame-Buffer Compression (FBC) by default on Haswell and Broadwell GPUs.
A nice thread which mangles all of theese details is Firefox slow after DU.

If you want to try the intel driver, please make sure you really have installed the latest.
If  'apt policy xserver-xorg-video-intel' seems suspicious (the .918 installed), you can do:
apt update ; apt purge xserver-xorg-video-intel ; apt install xserver-xorg-video-intel

greetings
musca
« Last Edit: 2017/01/16, 19:43:35 by musca »
„Es irrt der Mensch, solang er strebt.“  (Goethe, Faust)

Offline samoht

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Re: intel graphics factsheet
« Reply #1 on: 2016/08/12, 18:57:21 »
Thank you so much for your support regarding the intel driver affairs  ;) .
Greetings
Tom

Offline horo

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Re: intel graphics factsheet
« Reply #2 on: 2016/08/12, 20:40:30 »
Hi,

Just checked my version:
Code: [Select]
$ apt policy xserver-xorg-video-intel
xserver-xorg-video-intel:
  Installiert:           2:2.99.918+git20160426-1
  Installationskandidat: 2:2.99.918+git20160426-1
  Versionstabelle:
 *** 2:2.99.918+git20160426-1 500
        500 http://ftp.spline.de/pub/siduction/fixes unstable/main amd64 Packages
        100 /var/lib/dpkg/status
     2:2.99.917+git20160706-1 500
        500 http://httpredir.debian.org/debian unstable/main amd64 Packages
Executing
Code: [Select]
apt update ; apt purge xserver-xorg-video-intel ; apt install xserver-xorg-video-intel
changes the version to:
Code: [Select]
$ apt policy xserver-xorg-video-intel
xserver-xorg-video-intel:
  Installiert:           2:2.99.917+git20160706-1
  Installationskandidat: 2:2.99.917+git20160706-1
  Versionstabelle:
 *** 2:2.99.917+git20160706-1 500
        500 http://httpredir.debian.org/debian unstable/main amd64 Packages
        100 /var/lib/dpkg/status

I didn't run into problems in the past as I installed a /etc/X11/xorg.conf.d/20-intel.conf some time ago to enable the UXA mode:
http://forum.siduction.org/index.php?topic=6102.0

Ciao, Martin
« Last Edit: 2016/08/12, 20:44:32 by horo »
omnia vincit pecunia :(

Offline musca

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Re: intel graphics factsheet
« Reply #3 on: 2016/08/12, 23:13:02 »
Hello horo,
thanks for showing this example. It is exactly what I was talking about.

greetz musca
„Es irrt der Mensch, solang er strebt.“  (Goethe, Faust)

Offline vilde

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Re: intel graphics factsheet
« Reply #4 on: 2017/02/08, 13:17:40 »
This saved my siduction installation on an old x60. After d-u I was dropped in a blinking shell. Unable to write anything I couldn't log in to root. I manage to start in init 3 by edit in grub during boot, logged in to root and did : apt update ; apt purge xserver-xorg-video-intel ; apt install xserver-xorg-video-intel and now the old laptop is running again. Thanks :)
XFCE-64 bit

Offline mld

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Re: intel graphics factsheet
« Reply #5 on: 2017/05/21, 20:45:09 »
Maybe a good place to add another hint concerning intel graphics. Since Kernel 4.8 booting up on certain core2duo/Dualcore setups with intel GM965/GL960 Integrated Graphics Controller can get a bit quirky (like on my Inspiron 1525). The combination of KMS and SVIDEO resulted in slow booting up, instabilities and/or freezes.

Luckily on the arch wiki a kind of workaround can be found.

E.g. adding a  video=SVIDEO-1:d to my grub.cfg fixed it

Offline DeepDayze

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Re: intel graphics factsheet
« Reply #6 on: 2017/05/23, 01:33:49 »
Quote
Maybe a good place to add another hint concerning intel graphics. Since Kernel 4.8 booting up on certain core2duo/Dualcore setups with intel GM965/GL960 Integrated Graphics Controller can get a bit quirky (like on my Inspiron 1525). The combination of KMS and SVIDEO resulted in slow booting up, instabilities and/or freezes.

Luckily on the arch wiki a kind of workaround can be found.

E.g. adding a  video=SVIDEO-1:d to my grub.cfg fixed it

This workaround worked for me in the case where I have my HP 8460p laptop in a dock and using an external 22" monitor for the display. As KMS did not use the full resolution of the monitor but of the internal LVDS panel, only part of the monitor was used for display when in text mode (init 3).

Turning off the internal LVDS using the video= boot option enabled the external monitor to use its full resolution. X still used the external display's natural resolution however.