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#1 2021-12-07 01:20:44

ItsCraft2241YT
Member
Registered: 2021-10-12
Posts: 20

lightdm error cannot start

so after i upgrade my system lightdm cannot start it keeps trying to start but it cannot and i see a messeges like kauditd_printk_skb: 1- callbacks suppressed

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#2 2022-02-10 19:17:05

abaumann
Administrator
From: Zurich
Registered: 2019-11-14
Posts: 810
Website

Re: lightdm error cannot start

Cannot reproduce this on any of my test machines.
Do you have an Xorg logfile or lightdm logfile?

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#3 2022-02-11 07:48:34

abaumann
Administrator
From: Zurich
Registered: 2019-11-14
Posts: 810
Website

Re: lightdm error cannot start

I can reproduce it on testing, not on stable:

/usr/bin/lightdm-gtk-greeter
/usr/bin/lightdm-gtk-greeter: symbol lookup error: /usr/lib/libpangoft2-1.0.so.0: undefined symbol: hb_font_set_synthetic_slant

Pango got published automatically, having an ABI breakage in gtk..

Ah, this post here is way out, in the meantime lightdm broke 10 times.. :-)

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#4 2022-02-11 08:41:55

abaumann
Administrator
From: Zurich
Registered: 2019-11-14
Posts: 810
Website

Re: lightdm error cannot start

/usr/bin/gtk-query-immodules-3.0: symbol lookup error: /usr/lib/libpangoft2-1.0.so.0: undefined symbol: hb_font_set_synthetic_slant

This means pango has an ABI breakage with harfbuzz. Rebuilding both harfbuzz and pango..

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#5 2022-02-11 12:54:49

abaumann
Administrator
From: Zurich
Registered: 2019-11-14
Posts: 810
Website

Re: lightdm error cannot start

Looks ok again..

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#6 2022-02-20 08:26:40

abaumann
Administrator
From: Zurich
Registered: 2019-11-14
Posts: 810
Website

Re: lightdm error cannot start

Root cause was a pango slipping to stable without harfbuzz:

https://bugs.archlinux32.org/index.php? … us%5B0%5D=

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