Ubuntu

Second monitor not detected after firmware update

Asked by David Tantono

Hi
I use Ubuntu 20.04 LTS with nvidia driver 460. I got an update notification to update image generic to kernel release 5.8.0.44 and I updated it. But, suddenly the second monitor does not show up. So, I try to use other Nvidia driver (450) and the screen does not boot up. Finally, I must downgrade the kernel release 5.8.0.43 with nvidia driver 460 and everything goes well. So, can you fix the bug on kernel release 5.8.0.44?

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actionparsnip (andrew-woodhead666) said : 		#1

A kernel is not firmware

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actionparsnip (andrew-woodhead666) said : 		#2

If you reboot, you can boot the older kernel. Is the system OK there?

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David Tantono (dtantono) said : 		#3

Yes, the older kernel is perfectly fine. But, the problematic updates are:
linux-modules-5.8.0-44-generic:amd64 <none> 5.8.0-44.50~20.04.1
2021-02-24 10:25:24 install linux-image-5.8.0-44-generic:amd64 <none> 5.8.0-44.50~20.04.1
2021-02-24 10:25:25 install linux-modules-extra-5.8.0-44-generic:amd64 <none> 5.8.0-44.50~20.04.1
2021-02-24 10:25:28 install linux-hwe-5.8-headers-5.8.0-44:all <none> 5.8.0-44.50~20.04.1
2021-02-24 10:25:32 install linux-headers-5.8.0-44-generic:amd64 <none> 5.8.0-44.50~20.04.1
Finally, when I reboot that the problems happened and It cannot start properly. Can you check the problem?

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actionparsnip (andrew-woodhead666) said : 		#4

I suggest you report a bug

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David Tantono (dtantono) said : 		#5

Hi
I did it (https://bugs.launchpad.net/ubuntu/+bug/1916727) and I hope the problem can be solved soon.

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Launchpad Janitor (janitor) said : 		#6

This question was expired because it remained in the 'Open' state without activity for the last 15 days.