oot@unmatched:~# uname -a
Linux unmatched 5.11.10 #1 SMP Wed Apr 7 17:37:34 UTC 2021 riscv64 riscv64 riscv64 GNU/Linux



[   14.536563] systemd[1]: Starting Load Kernel Module drm...
[   14.933760] systemd[1]: modprobe@drm.service: Succeeded.
[   14.939555] systemd[1]: Finished Load Kernel Module drm.
[   46.000589] [drm] radeon kernel modesetting enabled.
[   46.005296] radeon 0000:07:00.0: enabling device (0000 -> 0003)
[   46.011265] [drm] initializing kernel modesetting (CEDAR 0x1002:0x68F9 0x1462:0x2120 0x00).
[   46.019103] [drm:radeon_device_init [radeon]] *ERROR* Unable to find PCI I/O BAR
[   46.226798] [drm:radeon_atombios_init [radeon]] *ERROR* Unable to find PCI I/O BAR; using MMIO for ATOM IIO
[   46.331735] [drm] GPU not posted. posting now...
[   46.341009] radeon 0000:07:00.0: VRAM: 512M 0x0000000000000000 - 0x000000001FFFFFFF (512M used)
[   46.348962] radeon 0000:07:00.0: GTT: 1024M 0x0000000020000000 - 0x000000005FFFFFFF
[   46.356609] [drm] Detected VRAM RAM=512M, BAR=256M
[   46.361383] [drm] RAM width 64bits DDR
[   46.378236] [drm] radeon: 512M of VRAM memory ready
[   46.383013] [drm] radeon: 1024M of GTT memory ready.
[   46.388040] [drm] Loading CEDAR Microcode
[   48.844302] [drm] Internal thermal controller with fan control
[   48.853026] [drm] radeon: dpm initialized
[   49.210695] [drm] GART: num cpu pages 262144, num gpu pages 262144
[   49.232794] [drm] enabling PCIE gen 2 link speeds, disable with radeon.pcie_gen2=0
[   49.264965] [drm] PCIE GART of 1024M enabled (table at 0x000000000014C000).
[   49.271381] radeon 0000:07:00.0: WB enabled
[   49.275372] radeon 0000:07:00.0: fence driver on ring 0 use gpu addr 0x0000000020000c00
[   49.283356] radeon 0000:07:00.0: fence driver on ring 3 use gpu addr 0x0000000020000c0c
[   49.294368] radeon 0000:07:00.0: fence driver on ring 5 use gpu addr 0x000000000005c418
[   49.302950] radeon 0000:07:00.0: radeon: MSI limited to 32-bit
[   49.308891] radeon 0000:07:00.0: radeon: using MSI.
[   49.313685] [drm] radeon: irq initialized.
[   49.334367] [drm] ring test on 0 succeeded in 0 usecs
[   49.338667] [drm] ring test on 3 succeeded in 4 usecs
[   49.520785] [drm] ring test on 5 succeeded in 1 usecs
[   49.525088] [drm] UVD initialized successfully.
[   49.529877] [drm] ib test on ring 0 succeeded in 0 usecs
[   49.534978] [drm] ib test on ring 3 succeeded in 0 usecs
[   49.691337] [drm] ib test on ring 5 succeeded
[   49.697059] [drm] Radeon Display Connectors
[   49.700498] [drm] Connector 0:
[   49.703523] [drm]   HDMI-A-1
[   49.706373] [drm]   HPD2
[   49.708908] [drm]   DDC: 0x6460 0x6460 0x6464 0x6464 0x6468 0x6468 0x646c 0x646c
[   49.716290] [drm]   Encoders:
[   49.719243] [drm]     DFP1: INTERNAL_UNIPHY1
[   49.723500] [drm] Connector 1:
[   49.726525] [drm]   DVI-I-1
[   49.729318] [drm]   HPD4
[   49.731840] [drm]   DDC: 0x6450 0x6450 0x6454 0x6454 0x6458 0x6458 0x645c 0x645c
[   49.739221] [drm]   Encoders:
[   49.742159] [drm]     DFP2: INTERNAL_UNIPHY
[   49.746343] [drm]     CRT1: INTERNAL_KLDSCP_DAC1
[   49.750946] [drm] Connector 2:
[   49.753971] [drm]   VGA-1
[   49.756592] [drm]   DDC: 0x6430 0x6430 0x6434 0x6434 0x6438 0x6438 0x643c 0x643c
[   49.763974] [drm]   Encoders:
[   49.766929] [drm]     CRT2: INTERNAL_KLDSCP_DAC2
[   49.823023] radeon 0000:07:00.0: [drm] Cannot find any crtc or sizes
[   49.829490] [drm] Initialized radeon 2.50.0 20080528 for 0000:07:00.0 on minor 0
[   50.867031] radeon 0000:07:00.0: [drm] Cannot find any crtc or sizes