Ubuntu
gnome-shell package

  1. Bug #1971536
  2. Comment #4

Comment 4 for bug 1971536

Revision history for this message
Daniel van Vugt (vanvugt) wrote :

Thanks. These messages look the most suspicious to me:

Mai 04 11:04:24 mamba kernel: i915 0000:00:02.0: [drm] *ERROR* mstb 00000000caa481c4 port 1: DPCD read on addr 0x4b0 for 1 bytes NAKed
Mai 04 11:04:24 mamba kernel: i915 0000:00:02.0: [drm] *ERROR* mstb 00000000caa481c4 port 2: DPCD read on addr 0x4b0 for 1 bytes NAKed
Mai 04 11:04:27 mamba kernel: xhci_hcd 0000:2d:00.0: xHC error in resume, USBSTS 0x411, Reinit
Mai 04 11:04:27 mamba kernel: usb usb3: root hub lost power or was reset
Mai 04 11:04:27 mamba kernel: usb usb4: root hub lost power or was reset
...
Mai 04 11:04:27 mamba kernel: usb 4-2: Disable of device-initiated U1 failed.
Mai 04 11:04:27 mamba kernel: usb 4-2: Disable of device-initiated U2 failed.
Mai 04 11:04:27 mamba kernel: usb 4-2: reset SuperSpeed USB device number 2 using xhci_hcd
Mai 04 11:04:28 mamba kernel: usb 4-2.4: Disable of device-initiated U1 failed.
Mai 04 11:04:28 mamba kernel: usb 4-2.4: Disable of device-initiated U2 failed.
Mai 04 11:04:28 mamba kernel: usb 4-2.4: reset SuperSpeed USB device number 3 using xhci_hcd
Mai 04 11:04:31 mamba kernel: i915 0000:00:02.0: [drm] *ERROR* mstb 00000000caa481c4 port 1: DPCD read on addr 0x4b0 for 1 bytes NAKed
Mai 04 11:04:31 mamba kernel: i915 0000:00:02.0: [drm] *ERROR* mstb 00000000caa481c4 port 2: DPCD read on addr 0x4b0 for 1 bytes NAKed

It's certainly possible that if gnome-shell is expecting a working monitor then such kernel/hardware/dock/firmware bugs might make it appear to freeze, as it waits forever.