On 4/2/25 3:12 PM, Dave Close wrote:
Samuel Sieb wrote:
What is the video device? "lspci" output
The display does not appear in that output.
It must. Probably as something like "VGA compatible controller".
Check "journalctl -b" for lines with "drm" or "modesetting".
kernel: [drm] radeon kernel modesetting enabled.
kernel: [drm] initializing kernel modesetting (RV620 0x1002:0x95C5
0x1028:0x0342 0x00).
kernel: [drm] Detected VRAM RAM=256M, BAR=256M
kernel: [drm] RAM width 64bits DDR
kernel: [drm] radeon: 256M of VRAM memory ready
kernel: [drm] radeon: 512M of GTT memory ready.
kernel: [drm] Loading RV620 Microcode
Looks like an older AMD Radeon card.
kernel: [drm] Radeon Display Connectors
kernel: [drm] Connector 0:
kernel: [drm] DIN-1
kernel: [drm] Encoders:
kernel: [drm] TV1: INTERNAL_KLDSCP_DAC2
kernel: [drm] Connector 1:
kernel: [drm] DVI-I-1
kernel: [drm] HPD1
kernel: [drm] DDC: 0x7e60 0x7e60 0x7e64 0x7e64 0x7e68 0x7e68 0x7e6c 0x7e6c
kernel: [drm] Encoders:
kernel: [drm] CRT1: INTERNAL_KLDSCP_DAC1
kernel: [drm] DFP2: INTERNAL_KLDSCP_LVTMA
kernel: [drm] Connector 2:
kernel: [drm] DVI-I-2
kernel: [drm] HPD2
kernel: [drm] DDC: 0x7e20 0x7e20 0x7e24 0x7e24 0x7e28 0x7e28 0x7e2c 0x7e2c
kernel: [drm] Encoders:
kernel: [drm] CRT2: INTERNAL_KLDSCP_DAC2
kernel: [drm] DFP1: INTERNAL_UNIPHY
Which plug is the monitor connected to?
kernel: [drm] Initialized radeon 2.50.0 for 0000:01:00.0 on minor 0
kernel: radeon 0000:01:00.0: [drm] Cannot find any crtc or sizes
kernel: radeon 0000:01:00.0: [drm] Cannot find any crtc or sizes
kernel: radeon 0000:01:00.0: [drm] Cannot find any crtc or sizes
This is concerning. Try re-plugging the monitor. Can you test the
monitor on another computer? Do you have another monitor you can test
on this computer?
sddm-helper-start-wayland[99236]: "No backend specified, automatically choosing
drm\n"
sddm-helper-start-wayland[99236]: "kwin_wayland_drm: drmSetClientCap for Atomic
Mode Setting
failed. Using legacy mode on GPU \"/dev/dri/card0\"\n"
Do you see sddm running?
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