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#1 2020-08-01 18:44:30

Lukas152s
Member
Registered: 2020-08-01
Posts: 6

[SOLVED] Boot stuck after installing any display manager on amd laptop

Hello, newbie here, after installing SDDM booting is stuck at: Starting version 245.7-1-arch.When i boot without quiet parameter it's stuck on Finished| Load/Save random seed.

When i boot with loglevel=7 no errors show after Load/Save random seed line.

I tried - reinstalling sddm, plasma. Installing rng-tools, haveged

UPDATE: Running sddm-greeter returns: GREETER: Could not load the Qt platform plugin "xcb" in "" even though it was found

UPDATE 2: Just tried GDM and it doesn't work either

Last edited by Lukas152s (2020-08-02 17:59:13)

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#2 2020-08-01 19:51:28

seth
Member
Registered: 2012-09-03
Posts: 15,672

Re: [SOLVED] Boot stuck after installing any display manager on amd laptop

Please post the system journal for such a boot (eg. "sudo journalctl -b -1" for the last boot)

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#3 2020-08-01 20:20:45

Lukas152s
Member
Registered: 2020-08-01
Posts: 6

Re: [SOLVED] Boot stuck after installing any display manager on amd laptop

seth wrote:

Please post the system journal for such a boot (eg. "sudo journalctl -b -1" for the last boot)

Last failed boot journal - https://pastebin.com/P61xKBn3

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#4 2020-08-01 20:29:45

seth
Member
Registered: 2012-09-03
Posts: 15,672

Re: [SOLVED] Boot stuck after installing any display manager on amd laptop

Aug 01 19:52:34 archlinux kernel: Command line: BOOT_IMAGE=/boot/vmlinuz-linux-lts root=UUID=83abba91-9597-4c8c-8b64-83b59ea35997 rw loglevel=3 quiet 3

The particular boot was limited to the multi-user.target (final "3")
Did you also enable the haveged service?

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#5 2020-08-01 20:34:28

Lukas152s
Member
Registered: 2020-08-01
Posts: 6

Re: [SOLVED] Boot stuck after installing any display manager on amd laptop

seth wrote:
Aug 01 19:52:34 archlinux kernel: Command line: BOOT_IMAGE=/boot/vmlinuz-linux-lts root=UUID=83abba91-9597-4c8c-8b64-83b59ea35997 rw loglevel=3 quiet 3

The particular boot was limited to the multi-user.target (final "3")
Did you also enable the haveged service?

ooops, sorry wrong upload... https://pastebin.com/FHXJQaE1

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#6 2020-08-01 21:07:52

seth
Member
Registered: 2012-09-03
Posts: 15,672

Re: [SOLVED] Boot stuck after installing any display manager on amd laptop

Aug 01 18:20:58 archlinux kernel: [drm] This hardware requires experimental hardware support.
                                  See modparam exp_hw_support
modinfo amdgpu | grep exp

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#7 2020-08-01 21:12:10

Lukas152s
Member
Registered: 2020-08-01
Posts: 6

Re: [SOLVED] Boot stuck after installing any display manager on amd laptop

seth wrote:
modinfo amdgpu | grep exp

output:
parm:              exp_hw_support:experimental hw support (1 = enable, 0 = disable (default)) (int)

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#8 2020-08-01 21:26:01

seth
Member
Registered: 2012-09-03
Posts: 15,672

Re: [SOLVED] Boot stuck after installing any display manager on amd laptop

Yeah, I know what the output is…
You've to set this, though I'd start by not using the LTS kernel.

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#9 2020-08-01 21:27:32

Lukas152s
Member
Registered: 2020-08-01
Posts: 6

Re: [SOLVED] Boot stuck after installing any display manager on amd laptop

Oh okay... let me try and i will let you know, thanks

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#10 2020-08-01 22:46:54

Lukas152s
Member
Registered: 2020-08-01
Posts: 6

Re: [SOLVED] Boot stuck after installing any display manager on amd laptop

seth wrote:

Yeah, I know what the output is…
You've to set this, though I'd start by not using the LTS kernel.

Switching from LTS to normal fixed everything, thank you so much

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#11 2020-08-02 06:08:54

seth
Member
Registered: 2012-09-03
Posts: 15,672

Re: [SOLVED] Boot stuck after installing any display manager on amd laptop

Great.
Please always remember to mark resolved threads by editing your initial posts subject - so others will know that there's no task left, but maybe a solution to find.
Thanks.

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