I moved my drives to a similar piece of hardware and am now having some issues with the video which could possibly be hardware-related. It is old equipment, the same age as the one it is replacing.
1. The first issue was that 1 display output was garbled, like the video cable wasn't seated.
2. After disconnecting the problematic monitor and leaving just one while the system was running, I saw some errors in the logs. To get the video working again, I unloaded and reloaded the driver, i915kms.
3. When the system boots, there is no video output until i915kms is loaded. So, I have to blindly enter my password.
Right now, the system is running fine with a single monitor. I will try to troubleshoot some more and may go back to using a dedicated video card, like an nvidia.
How can I determine if this is a bug or hardware issue?
1. The first issue was that 1 display output was garbled, like the video cable wasn't seated.
2. After disconnecting the problematic monitor and leaving just one while the system was running, I saw some errors in the logs. To get the video working again, I unloaded and reloaded the driver, i915kms.
Code:
drmn0: [drm] *ERROR* uncleared fifo underrun on pipe A
drmn0: [drm] *ERROR* CPU pipe A FIFO underrun
drmn0: [drm] *ERROR* uncleared pch fifo underrun on pch transcoder A
drmn0: [drm] *ERROR* PCH transcoder A FIFO underrun
drmn0: [drm] *ERROR* uncleared fifo underrun on pipe A
drmn0: [drm] *ERROR* CPU pipe A FIFO underrun
drmn0: [drm] *ERROR* uncleared pch fifo underrun on pch transcoder A
drmn0: [drm] *ERROR* PCH transcoder A FIFO underrun
drmn0: [drm] *ERROR* [CRTC:45:pipe A] mismatch in pch_pfit.enabled 0xfffffe011c6ec7d0V
pipe state doesn't match!3. When the system boots, there is no video output until i915kms is loaded. So, I have to blindly enter my password.
Right now, the system is running fine with a single monitor. I will try to troubleshoot some more and may go back to using a dedicated video card, like an nvidia.
How can I determine if this is a bug or hardware issue?