# dmesg -l err [ 0.625637] pci 0000:00:00.2: AMD-Vi: Unable to read/write to IOMMU perf counter. [ 2.010716] snd_pci_acp3x 0000:05:00.5: Invalid ACP audio mode : 0 [ 2.571782] acp_pdm_mach acp_pdm_mach.0: snd_soc_register_card(acp) failed: -517 [ 2.620988] acp_pdm_mach acp_pdm_mach.0: snd_soc_register_card(acp) failed: -517 [ 3.070849] [drm:dm_helpers_dp_write_dpcd [amdgpu]] *ERROR* Failed to find connector for link!
- 2 ~ 4 are about sound. However sound works well, safe to ignore them?
- 1 & 5 are about AMD.
nvidia-xconfig, the laptop works well, the only problem is the external monitor doesn’t display anything.
nvidia-xconfig, the external monitor works, but the laptop’s monitor not work (black with backlight on) and reboot / wakeup failed.