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kernel panic ? (black screen on bootup)
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skorefish
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Joined: 21 Jun 2015
Posts: 281

PostPosted: Wed Nov 21, 2018 10:17 am    Post subject: kernel panic ? (black screen on bootup) Reply with quote

hello,

seems this box starts with a blanck screen.. What can i do ?

lspci -v | wgetpaste
lspci: Unable to load libkmod resources: error -12 ???
Your paste can be seen here: https://paste.pound-python.org/show/8EOHOQd0Zbc7i0mogdv2

lscpu | wgetpaste
Your paste can be seen here: https://paste.pound-python.org/show/E0qJ6mG6Rk9oMhVDkKt2/

cat /var/log/dmesg | wgetpaste
Your paste can be seen here: https://paste.pound-python.org/show/HyfCsO4UAKXJRSEp6zF2/

cat /var/log/kern.log | wgetpaste
Your paste can be seen here: https://paste.pound-python.org/show/oDmzzkbyXqHpkEdzqeJa/
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PrSo
Tux's lil' helper
Tux's lil' helper


Joined: 01 Jun 2017
Posts: 128

PostPosted: Wed Nov 21, 2018 11:55 am    Post subject: Reply with quote

I don't see any kernel panic messages here.
Can you ssh the machine, or turn it off/reboot by power button or ctrl+alt+del (the "Three-Finger-Salute") key combination?
If you have the [AMD/ATI] RS880 [Radeon HD 4250] GPU only like I can see in your log file, I think that amdgpu does not support it.
IMHO you should blacklist amdgpu (add it to a file in /etc/modprobe.d/) or disable amdgpu in kernel config:
Code:
[    1.190545] [drm] amdgpu kernel modesetting enabled.

Please post your kernel .config file.
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mike155
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Joined: 17 Sep 2010
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Location: Frankfurt, Germany

PostPosted: Wed Nov 21, 2018 12:23 pm    Post subject: Reply with quote

What I would like to see in dmesg is something like:
Code:
dmesg | grep -i console
[    0.000000] Console: colour VGA+ 80x25
[    0.000000] console [tty0] enabled

What I see in your dmesg output is:
Code:
[    0.000000] Console: colour dummy device 80x25
[    0.000000] console [tty0] enabled

"dummy device" looks wrong.

Please post your kernel .config file.
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Hu
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Joined: 06 Mar 2007
Posts: 13848

PostPosted: Thu Nov 22, 2018 1:36 am    Post subject: Reply with quote

As a clarification, when the above posters asked you to post the kernel configuration, they meant: upload the kernel configuration to a pastebin, then post the URL here. Your full kernel configuration is almost certainly too large to post directly in the forum.
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skorefish
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Joined: 21 Jun 2015
Posts: 281

PostPosted: Thu Nov 22, 2018 9:24 am    Post subject: Reply with quote

the Three-Finger-Salute works
Quote:
IMHO you should blacklist amdgpu (add it to a file in /etc/modprobe.d/) or disable amdgpu in kernel config:


i 'll try (not working)

cat .config | wgetpaste
Your paste can be seen here: https://paste.pound-python.org/show/8TOtkTt7WE08VhN0DyBL/

Ok i only see:
Code:

Loading Linux 4.14.78-gentoo
_


and for the rest black screen, I can not ping the machine
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PrSo
Tux's lil' helper
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Joined: 01 Jun 2017
Posts: 128

PostPosted: Thu Nov 22, 2018 11:44 am    Post subject: Reply with quote

Since your machine has UEFI, IMHO you could enable EFI Framebuffer device in kernel .config file - CONFIG_FB_EFI=y, and see if this helps.
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skorefish
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PostPosted: Thu Nov 22, 2018 12:00 pm    Post subject: Reply with quote

my new .config

cat /usr/src/linux/.config | wgetpaste
Your paste can be seen here: https://paste.pound-python.org/show/5n1izBUPV2SEY2UA5dcJ/

Ok now i can see somthing on the screen,

last 2 lines:

[drm] radeon kernel modesetting enabled
fb: switching tp radeondrmfb from EFI VGA

then it stops
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skorefish
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Joined: 21 Jun 2015
Posts: 281

PostPosted: Thu Nov 22, 2018 2:34 pm    Post subject: Reply with quote

with this config it boots to cli :D

cat /usr/src/linux/.config | wgetpaste
Your paste can be seen here: https://paste.pound-python.org/show/Lg8br24JmQoKilId4MWD/
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