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plymouth - Wrong splashscreen at boot but work at shutdown
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Gojita02
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Joined: 12 Jun 2013
Posts: 32

PostPosted: Mon Aug 05, 2024 6:06 am    Post subject: plymouth - Wrong splashscreen at boot but work at shutdown Reply with quote

Hello,

I've a gentoo with systemd boot and plymouth.

When I ran the following script to test the plymouth's themes, all is fine.

Code:
#!/bin/bash

chk_root() {
   if [ ! $(id -u) -eq 0 ]; then
           echo "Must be root"
           exit
   fi
}

chk_root

DURATION=$1
if [ $# -ne 1 ]; then
   DURATION=5
fi

plymouthd
plymouth --show-splash
for ((I=0; I<$DURATION; I++)); do
   plymouth --update=test$I
   sleep 1;
done
plymouth quit


I saw the correct image:
https://pasteboard.co/sKaQf9EbMpdm.jpg

But, At boot, gray screen with 3 dot
https://pasteboard.co/ze0Jhexvl38x.jpg


But A shutdown, the themes is correct:
https://pasteboard.co/XtQoMz6bYLyc.jpg

I've test 3 differents themes and same behavior. Shutdown is correct, but at boot, same gray screen.

Do you have any idea ?

Thank you for your help
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logrusx
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Joined: 22 Feb 2018
Posts: 2405

PostPosted: Mon Aug 05, 2024 7:37 am    Post subject: Reply with quote

I gave up plymouth more then 2 years ago. It just stopped working correctly. Something in the kernel changed somewhere around 5.17 I think. Some say it's a race condition, I don't know. Now I have deferred takeover and look at the EFI logo for a few seconds.

Best Regards,
Georgi
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plasmonics
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Joined: 16 Mar 2011
Posts: 10

PostPosted: Mon Aug 05, 2024 5:21 pm    Post subject: Reply with quote

It works on my laptop. I have amd vega 10 GPU. I use spinner theme.

I just followed the wiki. Plymouth should be compiled wit support for drm, gtk, pango, and udev. Then i set the theme from the command line. If you have AMD GPU, you can make the initramfs with either genkernel or dracut. I saw no difference in the splash behaviour between the two methods.

With nVidia GPU, I could not get plymouth to work with genkernel-built initramfs. However, it works with dracut built initramfs.

Overall, I would say plymouth works ok, not great. All the themes work. IMHO it works better with amd gpu.
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