我安装了 Ubuntu 18.04 LTS 来运行 Odin 项目。我查看了系统日志，发现我的显卡（AMD 显卡）未被使用。
错误如下：
05:31:02 kernel: [drm:radeon_pm_resume [radeon]] *ERROR* radeon: dpm resume failed
05:31:02 kernel: [drm:si_dpm_enable [radeon]] *ERROR* si_init_smc_table failed
05:31:02 kernel: [drm:si_resume [radeon]] *ERROR* si startup failed on resume
05:31:02 kernel: [drm:r600_ring_test [radeon]] *ERROR* radeon: ring 0 test failed (scratch(0x850C)=0xFFFFFFFF)
05:30:59 kernel: [drm:radeon_pm_resume [radeon]] *ERROR* radeon: dpm resume failed
05:30:59 kernel: [drm:si_dpm_enable [radeon]] *ERROR* si_init_smc_table failed
05:30:59 kernel: [drm:atom_execute_table_locked [radeon]] *ERROR* atombios stuck executing 6860 (len 94, WS 12, PS 8) @ 0x6868
05:30:59 kernel: [drm:atom_op_jump [radeon]] *ERROR* atombios stuck in loop for more than 5secs aborting
05:19:36 kernel: [drm:radeon_pm_resume [radeon]] *ERROR* radeon: dpm resume failed
05:19:36 kernel: [drm:si_dpm_enable [radeon]] *ERROR* si_init_smc_table failed
05:19:36 kernel: [drm:si_resume [radeon]] *ERROR* si startup failed on resume
05:19:36 kernel: [drm:r600_ring_test [radeon]] *ERROR* radeon: ring 0 test failed (scratch(0x850C)=0xFFFFFFFF)
05:19:34 kernel: [drm:radeon_pm_resume [radeon]] *ERROR* radeon: dpm resume failed
05:19:34 kernel: [drm:si_dpm_enable [radeon]] *ERROR* si_init_smc_table failed
05:19:34 kernel: [drm:atom_execute_table_locked [radeon]] *ERROR* atombios stuck executing 6860 (len 94, WS 12, PS 8) @ 0x6868
05:19:34 kernel: [drm:atom_op_jump [radeon]] *ERROR* atombios stuck in loop for more than 5secs aborting
03:48:10 kernel: [drm:radeon_pm_resume [radeon]] *ERROR* radeon: dpm resume failed
03:48:10 kernel: [drm:si_dpm_enable [radeon]] *ERROR* si_init_smc_table failed
03:48:10 kernel: [drm:si_resume [radeon]] *ERROR* si startup failed on resume
03:48:10 kernel: [drm:r600_ring_test [radeon]] *ERROR* radeon: ring 0 test failed (scratch(0x850C)=0xFFFFFFFF)
03:48:08 kernel: [drm:radeon_pm_resume [radeon]] *ERROR* radeon: dpm resume failed
03:48:08 kernel: [drm:si_dpm_enable [radeon]] *ERROR* si_init_smc_table failed
03:48:07 kernel: [drm:atom_execute_table_locked [radeon]] *ERROR* atombios stuck executing 6860 (len 94, WS 12, PS 8) @ 0x6868
03:48:07 kernel: [drm:atom_op_jump [radeon]] *ERROR* atombios stuck in loop for more than 5secs aborting
运行 lspci 命令后：
03:00.0 Display controller: Advanced Micro Devices, Inc. [AMD/ATI] Sun LE
[Radeon HD 8550M / R5 M230]
在默认播放器上播放 720p mp4 视频时，屏幕有时会出现一些故障。此外，在启动时，Ubuntu 加载屏幕之前会显示一些错误，不知道这是怎么回事，可能是 AMD 的问题。
我该如何调试/修复这个问题？