Comment 33 for bug 1319589

Now, on Ubuntu 14.04.1 LTS with Linux 3.18.1:

valentin@ACER-VALENTIN2:~$ dmesg | grep drm
[ 13.285632] [drm] Initialized drm 1.1.0 20060810
[ 14.558393] [drm] radeon kernel modesetting enabled.
[ 14.558511] fb: switching to radeondrmfb from VESA VGA
[ 14.560642] [drm] initializing kernel modesetting (RV710 0x1002:0x9553 0x1025:0x0293).
[ 14.560662] [drm] register mmio base: 0xCFEF0000
[ 14.560664] [drm] register mmio size: 65536
[ 14.560765] [drm] Detected VRAM RAM=512M, BAR=256M
[ 14.560767] [drm] RAM width 64bits DDR
[ 14.560876] [drm] radeon: 512M of VRAM memory ready
[ 14.560878] [drm] radeon: 1024M of GTT memory ready.
[ 14.560894] [drm] Loading RV710 Microcode
[ 15.463701] [drm] radeon: dpm initialized
[ 15.642370] [drm] GART: num cpu pages 262144, num gpu pages 262144
[ 15.644694] [drm] enabling PCIE gen 2 link speeds, disable with radeon.pcie_gen2=0
[ 15.647056] [drm] PCIE GART of 1024M enabled (table at 0x000000000025E000).
[ 15.648025] [drm] Supports vblank timestamp caching Rev 2 (21.10.2013).
[ 15.648026] [drm] Driver supports precise vblank timestamp query.
[ 15.648096] [drm] radeon: irq initialized.
[ 15.693947] [drm] ring test on 0 succeeded in 1 usecs
[ 15.693953] [drm] ring test on 3 succeeded in 2 usecs
[ 15.878415] [drm] ring test on 5 succeeded in 1 usecs
[ 15.878420] [drm] UVD initialized successfully.
[ 15.878564] [drm] ib test on ring 0 succeeded in 0 usecs
[ 15.878596] [drm] ib test on ring 3 succeeded in 0 usecs
[ 16.536650] [drm] ib test on ring 5 succeeded
[ 16.538081] [drm] radeon atom DIG backlight initialized
[ 16.538089] [drm] Radeon Display Connectors
[ 16.538091] [drm] Connector 0:
[ 16.538093] [drm] LVDS-1
[ 16.538096] [drm] DDC: 0x7f68 0x7f68 0x7f6c 0x7f6c 0x7f70 0x7f70 0x7f74 0x7f74
[ 16.538097] [drm] Encoders:
[ 16.538098] [drm] LCD1: INTERNAL_UNIPHY2
[ 16.538100] [drm] Connector 1:
[ 16.538101] [drm] VGA-1
[ 16.538103] [drm] DDC: 0x7e40 0x7e40 0x7e44 0x7e44 0x7e48 0x7e48 0x7e4c 0x7e4c
[ 16.538104] [drm] Encoders:
[ 16.538105] [drm] CRT1: INTERNAL_KLDSCP_DAC1
[ 16.538106] [drm] Connector 2:
[ 16.538107] [drm] HDMI-A-1
[ 16.538109] [drm] HPD1
[ 16.538110] [drm] DDC: 0x7e50 0x7e50 0x7e54 0x7e54 0x7e58 0x7e58 0x7e5c 0x7e5c
[ 16.538111] [drm] Encoders:
[ 16.538113] [drm] DFP1: INTERNAL_UNIPHY
[ 17.507350] [drm] fb mappable at 0xD045F000
[ 17.507355] [drm] vram apper at 0xD0000000
[ 17.507357] [drm] size 4325376
[ 17.507358] [drm] fb depth is 24
[ 17.507360] [drm] pitch is 5632
[ 17.507544] fbcon: radeondrmfb (fb0) is primary device
[ 17.967586] radeon 0000:02:00.0: fb0: radeondrmfb frame buffer device
[ 17.989768] [drm] Initialized radeon 2.40.0 20080528 for 0000:02:00.0 on minor 0

It seem to be fixed :)