Cedar Trail drm graphic driver "cedarview" automatically installed but not works with gma500_gfx module

[Guillaume Ponçon]

$ lsb_release -rd
Description: Ubuntu 12.04.2 LTS
Release: 12.04

$ apt-cache policy cedarview-drm
cedarview-drm:
  Installé : 20120717-0ubuntu1
  Candidat : 20120717-0ubuntu1
 Table de version :
 *** 20120717-0ubuntu1 0
        500 http://fr.archive.ubuntu.com/ubuntu/ precise-updates/multiverse i386 Packages
        100 /var/lib/dpkg/status

With the DN2800MT card (Atom 2x1.8Mz with Cedar Trail technology), ubuntu 12.04 LTS works fine except graphic acceleration.

Ubuntu automatically install a gma500_gfx module and the cedarview-drm package, but the activation from system parameters fails. This driver needs the cedarview_gfx module (installation fails, please consult /var/log/jockey.log).

I tried to build the ubuntu kernel 3.2 with the intel driver patch (https://downloadcenter.intel.com/Detail_Desc.aspx?lang=eng&changeLang=true&DwnldId=21938), build OK but not works ([drm:cdv_intel_dp_complete_link_train] *ERROR* failed to train DP, aborting from kern.log). With the linux kernel 3.8, the intel patch fails :

$ tail /var/log/jockey.log :
2013-04-11 12:36:04,297 WARNING: modinfo for module cedarview_gfx failed: ERROR: modinfo: could not find module cedarview_gfx
2013-04-11 12:36:04,299 WARNING: /sys/module/cedarview_gfx/drivers does not exist, cannot rebind cedarview_gfx driver
2013-04-11 12:36:17,928 DEBUG: Shutting down

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Stephane Ricci (stephane-ricci)]

I can't use my DN2800MT board for mediacenter

[lule (thelule8)]

john@john-1225C:~$ apt-cache policy cedarview-drm
cedarview-drm:
  Installé : 20120717-0ubuntu1
  Candidat : 20120717-0ubuntu1
 Table de version :
 *** 20120717-0ubuntu1 0
        500 http://fr.archive.ubuntu.com/ubuntu/ precise-updates/multiverse i386 Packages
        100 /var/lib/dpkg/status

john@john-1225C:~$ tail /var/log/jockey.log
W: Possible missing firmware /lib/firmware/rtl_nic/rtl8106e-2.fw for module r8169
W: Possible missing firmware /lib/firmware/rtl_nic/rtl8106e-1.fw for module r8169
W: Possible missing firmware /lib/firmware/rtl_nic/rtl8411-2.fw for module r8169

2015-08-22 02:57:00,861 WARNING: modinfo for module cedarview_gfx failed: ERROR: modinfo: could not find module cedarview_gfx

2015-08-22 02:57:00,862 WARNING: /sys/module/cedarview_gfx/drivers does not exist, cannot rebind cedarview_gfx driver
2015-08-22 03:01:38,818 WARNING: modinfo for module cedarview_gfx failed: ERROR: modinfo: could not find module cedarview_gfx

2015-08-22 03:01:38,821 WARNING: /sys/module/cedarview_gfx/drivers does not exist, cannot rebind cedarview_gfx driver