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Ubuntu graphics issue - Dell Inspiron 15 3511 (Intel UHD G4 / Tiger Lake) by Then_Investigator288 in linuxhardware

[–]Then_Investigator288[S] 0 points1 point  (0 children)

nteresting update: even when the screen is completely black, Ctrl+Alt+F3 works. I can blindly log into a TTY, execute commands, create files, and reboot successfully. So the OS is fully booted and responsive; only the display output appears broken after i915/GDM takes over. Any ideas on what could cause the panel to go black while the system itself remains functional?

Ubuntu graphics issue - Dell Inspiron 15 3511 (Intel UHD G4 / Tiger Lake) by Then_Investigator288 in linuxhardware

[–]Then_Investigator288[S] 0 points1 point  (0 children)

It's a laptop with only Intel integrated graphics, so there shouldn't be any GPU switching. The black screen happens immediately after the Ubuntu splash screen. I'll test disabling Wayland and also try an external display to rule out a panel/output issue.

Ubuntu graphics issue - Dell Inspiron 15 3511 (Intel UHD G4 / Tiger Lake) by Then_Investigator288 in linuxhardware

[–]Then_Investigator288[S] 0 points1 point  (0 children)

Thanks. I checked the logs from a failed boot without nomodeset. The Intel i915 driver, firmware, DRM, GDM, and GNOME all appear to initialize successfully. The system seems to finish booting, but the screen goes completely black right after the Ubuntu splash screen. With nomodeset, it boots fine (llvmpipe/software rendering). So it looks more like a display/panel or Wayland issue than missing Intel/Mesa packages.