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asked 2019-02-07 11:11:40 -0500

coderpal gravatar image

I did a fresh install of Fedora 29 with the kernel-4.18.16-300.fc29.x86_64. The installation was uneventful and succeeded perfectly. However as soon as I updated to kernel-4.20.6-200.fc29.x86_64, I couldn't even log in, all I had was a black screen. I reinstalled Fedora 29 and set the default kernel to 4.18.16-300.fc29.x86_64: everything worked. I performed a test with an iso image burnt on a USB stick on two different computers. With an Intel CPU i7-7700K @4.20 GHz (8 threads), the kernel booted without a problem. However with Intel i5-3570K CPU @ 3.40GHz × 4, I got the same result as before. My motherboard with Intel i5 is an ASRock z77 Extreme 4. I cannot explain why this is happening, except I suspect some incompatibility with the processor or/and the CPU. Thank you in advance for any help. Pierre

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No need to reinstall just because one kernel doesn’t boot. Keep booting the old one until the problem is fixed in a newer kernel. Boot the broken kernel, then boot a good kernel and use journalctl -b-1 to find the error messages of the previous (failed) boot.

florian gravatar imageflorian ( 2019-02-07 12:10:38 -0500 )edit

Maybe filter out the non-warning messages like this journalctl -b -1 -p warning or journalctl -b -1 -p err.

villykruse gravatar imagevillykruse ( 2019-02-07 12:48:44 -0500 )edit

Thank you! I started the good kernel first, and then rebooted with the newest kernel. After a little bit, the newest kernel booted successfully. I guess I wasn't patient enough beforehand!

coderpal gravatar imagecoderpal ( 2019-02-07 13:41:22 -0500 )edit

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answered 2019-02-07 12:10:14 -0500

loboedu gravatar image

Any GPUs? The lack of their proper drivers can cause this problem, too.

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GeForce GTX 1050 Ti 4096 MB. Installed the NVIDIA drivers according to description in link text

coderpal gravatar imagecoderpal ( 2019-02-07 12:53:22 -0500 )edit

In that case, I'd say that the driver isn't being mounted onto the new kernel version, for some reason. Try uninstalling the driver and re-installing it, to see if the problem goes away.

I'm having a similar problem with my GTX550ti. I've installed its driver, but every time I update the kernel version, I get a black screen instead of the login screen. Then I have to uninstall and re-install it back up again, even having installed dkms nvidia.

loboedu gravatar imageloboedu ( 2019-02-07 13:39:43 -0500 )edit

dkms? maybe the first time you booted the kernel, you aborted while the driver module was rebuilding.

florian gravatar imageflorian ( 2019-02-07 15:20:48 -0500 )edit

You're right: I didn't wait long enough and aborted. I eventually was able to boot successfully with the new kernel after having installed the NVIDIA drivers.

coderpal gravatar imagecoderpal ( 2019-02-07 16:24:54 -0500 )edit

Hmmm well... next time I'll wait a bit more to see if that applies to me as well. Thanks for pointing it out!

loboedu gravatar imageloboedu ( 2019-02-07 18:20:43 -0500 )edit

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Asked: 2019-02-07 11:11:40 -0500

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Last updated: Feb 07 '19