---
lspci -nn | grep VGA
00:02.0 VGA compatible controller [0300]: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller [8086:0116] (rev 09)
01:00.0 VGA compatible controller [0300]: Advanced Micro Devices, Inc. [AMD/ATI] Seymour [Radeon HD 6400M/7400M Series] [1002:6760] (rev ff)
----
dmesg | egrep "radeon|drm"
[ 2.842112] [drm] radeon kernel modesetting enabled.
[ 2.843060] radeon 0000:01:00.0: enabling device (0000 -> 0003)
[ 2.843386] [drm] initializing kernel modesetting (CAICOS 0x1002:0x6760 0x17AA:0x3977 0x00).
[ 2.853261] [drm] Memory usable by graphics device = 2048M
[ 2.853268] fb: switching to inteldrmfb from EFI VGA
[ 2.853491] [drm] Replacing VGA console driver
[ 2.877471] [drm] Supports vblank timestamp caching Rev 2 (21.10.2013).
[ 2.877473] [drm] Driver supports precise vblank timestamp query.
[ 2.919222] radeon 0000:01:00.0: VRAM: 1024M 0x0000000000000000 - 0x000000003FFFFFFF (1024M used)
[ 2.919227] radeon 0000:01:00.0: GTT: 1024M 0x0000000040000000 - 0x000000007FFFFFFF
[ 2.919240] [drm] Detected VRAM RAM=1024M, BAR=256M
[ 2.919243] [drm] RAM width 64bits DDR
[ 2.919391] [drm] radeon: 1024M of VRAM memory ready
[ 2.919393] [drm] radeon: 1024M of GTT memory ready.
[ 2.919409] [drm] Loading CAICOS Microcode
[ 2.919613] [drm] Internal thermal controller with fan control
[ 2.920006] radeon 0000:01:00.0: vgaarb: changed VGA decodes: olddecodes=io+mem,decodes=none:owns=none
[ 2.924607] [drm] radeon: dpm initialized
[ 2.924817] [drm] GART: num cpu pages 262144, num gpu pages 262144
[ 2.934698] [drm] PCIE GART of 1024M enabled (table at 0x0000000000162000).
[ 2.934844] radeon 0000:01:00.0: WB enabled
[ 2.934849] radeon 0000:01:00.0: fence driver on ring 0 use gpu addr 0x0000000040000c00 and cpu addr 0x000000005d2e055a
[ 2.934852] radeon 0000:01:00.0: fence driver on ring 3 use gpu addr 0x0000000040000c0c and cpu addr 0x00000000a0bd44d9
[ 2.935610] radeon 0000:01:00.0: fence driver on ring 5 use gpu addr 0x0000000000072118 and cpu addr 0x00000000d66f3705
[ 2.935613] [drm] Supports vblank timestamp caching Rev 2 (21.10.2013).
[ 2.935614] [drm] Driver supports precise vblank timestamp query.
[ 2.935616] radeon 0000:01:00.0: radeon: MSI limited to 32-bit
[ 2.935691] radeon 0000:01:00.0: radeon: using MSI.
[ 2.935751] [drm] radeon: irq initialized.
[ 2.952620] [drm] ring test on 0 succeeded in 2 usecs
[ 2.952635] [drm] ring test on 3 succeeded in 9 usecs
[ 3.128631] [drm] ring test on 5 succeeded in 2 usecs
[ 3.128641] [drm] UVD initialized successfully.
[ 3.129132] [drm] ib test on ring 0 succeeded in 0 usecs
[ 3.129268] [drm] ib test on ring 3 succeeded in 0 usecs
[ 3.804250] [drm] ib test on ring 5 succeeded
[ 3.805737] [drm] Radeon Display Connectors
[ 3.818161] [drm] Initialized radeon 2.50.0 20080528 for 0000:01:00.0 on minor 0
[ 3.820101] [drm] Initialized i915 1.6.0 20171023 for 0000:00:02.0 on minor 1
[ 3.958123] fbcon: inteldrmfb (fb0) is primary device
[ 3.958241] i915 0000:00:02.0: fb0: inteldrmfb frame buffer device
[ 319.832831] [drm] PCIE GART of 1024M enabled (table at 0x0000000000162000).
[ 319.832939] radeon 0000:01:00.0: WB enabled
[ 319.832944] radeon 0000:01:00.0: fence driver on ring 0 use gpu addr 0x0000000040000c00 and cpu addr 0x000000005d2e055a
[ 319.832948] radeon 0000:01:00.0: fence driver on ring 3 use gpu addr 0x0000000040000c0c and cpu addr 0x00000000a0bd44d9
[ 319.833697] radeon 0000:01:00.0: fence driver on ring 5 use gpu addr 0x0000000000072118 and cpu addr 0x00000000d66f3705
[ 319.850064] [drm] ring test on 0 succeeded in 1 usecs
[ 319.850078] [drm] ring test on 3 succeeded in 8 usecs
[ 320.026100] [drm] ring test on 5 succeeded in 2 usecs
[ 320.026111] [drm] UVD initialized successfully.
[ 320.026253] [drm] ib test on ring 0 succeeded in 0 usecs
[ 320.026386] [drm] ib test on ring 3 succeeded in 0 usecs
[ 320.700323] [drm] ib test on ring 5 succeeded