dmesg | grep radeon
[ 0.000000] Command line: BOOT_IMAGE=/vmlinuz-4.15.0-30deepin-generic root=UUID=b79c0d83-0bee-45aa-b067-41fb49997691 ro quiet radeon.cik_support=0 amdgpu.cik_support=1 radeon.si_support=0 amdgpu.si_support=1 DEEPIN_GFXMODE=0,1366x768,1024x768
[ 0.000000] Kernel command line: BOOT_IMAGE=/vmlinuz-4.15.0-30deepin-generic root=UUID=b79c0d83-0bee-45aa-b067-41fb49997691 ro quiet radeon.cik_support=0 amdgpu.cik_support=1 radeon.si_support=0 amdgpu.si_support=1 DEEPIN_GFXMODE=0,1366x768,1024x768
[ 3.973627] [drm] radeon kernel modesetting enabled.
[ 3.973858] radeon 0000:01:00.0: enabling device (0000 -> 0003)
[ 4.062093] radeon 0000:01:00.0: vgaarb: changed VGA decodes: olddecodes=io+mem,decodes=none:owns=none
[ 4.065283] radeon 0000:01:00.0: VRAM: 2048M 0x0000000000000000 - 0x000000007FFFFFFF (2048M used)
[ 4.065284] radeon 0000:01:00.0: GTT: 1024M 0x0000000080000000 - 0x00000000BFFFFFFF
[ 4.065391] [drm] radeon: 2048M of VRAM memory ready
[ 4.065392] [drm] radeon: 1024M of GTT memory ready.
[ 4.067444] [drm] radeon: dpm initialized
[ 4.067877] [drm] enabling PCIE gen 2 link speeds, disable with radeon.pcie_gen2=0
[ 4.072214] radeon 0000:01:00.0: WB enabled
[ 4.072216] radeon 0000:01:00.0: fence driver on ring 0 use gpu addr 0x0000000080000c00 and cpu addr 0x (ptrval)
[ 4.072217] radeon 0000:01:00.0: fence driver on ring 3 use gpu addr 0x0000000080000c0c and cpu addr 0x (ptrval)
[ 4.072622] radeon 0000:01:00.0: fence driver on ring 5 use gpu addr 0x0000000000072118 and cpu addr 0x (ptrval)
[ 4.072625] radeon 0000:01:00.0: radeon: MSI limited to 32-bit
[ 4.072656] radeon 0000:01:00.0: radeon: using MSI.
[ 4.072689] [drm] radeon: irq initialized.
[ 4.295541] [drm:r600_ring_test [radeon]] *ERROR* radeon: ring 0 test failed (scratch(0x8504)=0xCAFEDEAD)
[ 4.295547] radeon 0000:01:00.0: disabling GPU acceleration
[ 4.313117] [drm] Initialized radeon 2.50.0 20080528 for 0000:01:00.0 on minor 0
vyacheslav@dev-pc:~$ inxi -G
Graphics: Card-1: Intel 3rd Gen Core processor Graphics Controller
Card-2: Advanced Micro Devices [AMD/ATI] Thames [Radeon HD 7500M/7600M Series]
Display Server: X.Org 1.19.6 drivers: modesetting,ati,radeon (unloaded: fbdev,vesa)
Resolution: 1366x768@60.06hz, 1366x768@59.79hz
GLX Renderer: Mesa DRI Intel Ivybridge Mobile GLX Version: 3.0 Mesa 18.1.9