Mod-edit: Formatting
After updating, if I choose the 5.9.16 or 5.10.2 kernels I get a black screen.
If I choose 5.9.1 it boots normally. (Ediited to correct kernel versions.)
On 5.10.2, if I hit Ctrl Alt F2, I get to tty2 and a login prompt.
If I then hit Ctrl Alt F1 I get to tty1, but there is no login prompt; the cursor is sitting there blinking.
Something told me the problem was likely to be the display manager.
The relevant portion of ‘journalctl -b’ on the working system is as follows:
Jan 01 13:04:11 CoolerMaster systemd[1]: Starting Light Display Manager...
Jan 01 13:04:11 CoolerMaster audit: BPF prog-id=9 op=LOAD
Jan 01 13:04:11 CoolerMaster audit: BPF prog-id=10 op=LOAD
Jan 01 13:04:11 CoolerMaster systemd[1]: Starting Hostname Service...
Jan 01 13:04:11 CoolerMaster dbus-daemon[690]: [system] Activating via systemd: service name='org.freedesktop.login1' unit='dbus-org.freedesktop.login1.service' requested by ':1.4' (uid=0 pid=717 comm="/usr/bin/lightdm ")
Jan 01 13:04:11 CoolerMaster systemd[1]: Starting Load Kernel Module drm...
Jan 01 13:04:11 CoolerMaster systemd[1]: modprobe@drm.service: Succeeded.
Jan 01 13:04:11 CoolerMaster audit[1]: SERVICE_START pid=1 uid=0 auid=4294967295 ses=4294967295 msg='unit=modprobe@drm comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success'
Jan 01 13:04:11 CoolerMaster audit[1]: SERVICE_STOP pid=1 uid=0 auid=4294967295 ses=4294967295 msg='unit=modprobe@drm comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success'
Jan 01 13:04:11 CoolerMaster systemd[1]: Finished Load Kernel Module drm.
Jan 01 13:04:11 CoolerMaster systemd-logind[693]: New seat seat0.
Jan 01 13:04:11 CoolerMaster sshd[714]: Server listening on 0.0.0.0 port 22.
Jan 01 13:04:11 CoolerMaster sshd[714]: Server listening on :: port 22.
Jan 01 13:04:11 CoolerMaster systemd-logind[693]: Watching system buttons on /dev/input/event2 (Power Button)
Jan 01 13:04:11 CoolerMaster systemd-logind[693]: Watching system buttons on /dev/input/event0 (Power Button)
Jan 01 13:04:11 CoolerMaster polkitd[692]: Loading rules from directory /etc/polkit-1/rules.d
Jan 01 13:04:11 CoolerMaster systemd-logind[693]: Watching system buttons on /dev/input/event1 (Sleep Button)
Jan 01 13:04:11 CoolerMaster dbus-daemon[690]: [system] Successfully activated service 'org.freedesktop.login1'
Jan 01 13:04:11 CoolerMaster systemd[1]: Started User Login Management.
Jan 01 13:04:11 CoolerMaster audit[1]: SERVICE_START pid=1 uid=0 auid=4294967295 ses=4294967295 msg='unit=systemd-logind comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success'
Jan 01 13:04:11 CoolerMaster polkitd[692]: Loading rules from directory /usr/share/polkit-1/rules.d
Jan 01 13:04:11 CoolerMaster systemd[1]: Started Light Display Manager.
On the broken 5.10.2 kernel it’s as follows:
Jan 01 15:53:12 CoolerMaster systemd[1]: Starting Light Display Manager...
Jan 01 15:53:12 CoolerMaster audit: BPF prog-id=9 op=LOAD
Jan 01 15:53:12 CoolerMaster audit: BPF prog-id=10 op=LOAD
Jan 01 15:53:12 CoolerMaster systemd[1]: Starting Hostname Service...
Jan 01 15:53:12 CoolerMaster kernel: AVX2 version of gcm_enc/dec engaged.
Jan 01 15:53:12 CoolerMaster kernel: AES CTR mode by8 optimization enabled
Jan 01 15:53:12 CoolerMaster systemd[1]: Started Light Display Manager.
Any help would be appreciated.