After having played around with "prime-select" instead of using the
graphical Nvidia tool my system now also boots in "on-demand" mode.
(You have to reboot after changing the settings with "prime-select".)
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The problem persists with Kernel 5.8.0-50, but I found out that it only
occurs if the usage of the Nvidia GPU is set to "on-demand".
In pure Intel or Nvidia mode the system boots as expected.
The mode van be set via graphical Nvidia tool or via "prime-select
{nvidia|intel|on-demand|query}".
My laptop running Groovy (20.10) is affected by this bug as well, but I
also can't figure or at least isolate where the problem could be. The
hardware is similar to what other people have reported (it's a ASUS
K501UQ, with a Core i7-6500U, Nvidia 940MX and Intel HD 520).
It seemed to have started
I have also had the boot problem disappear, return, and disappear
again.
On 1/22/21 11:12 AM, Wolf Pichler wrote:
> I have these installed:
>
> dpkg -l | grep "linux\-[a-z]*\-"
>
> rc linux-modules-extra-5.4.0-42-generic 5.4.0-42.46
> ii linux-modules-extra-5.4.0-58-generic
It seems that in at least 1 case, this condition arises with linux-
modules-extra installed so my suggestion above may not help
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I have these installed:
dpkg -l | grep "linux\-[a-z]*\-"
rc linux-modules-extra-5.4.0-42-generic 5.4.0-42.46
ii linux-modules-extra-5.4.0-58-generic 5.4.0-58.64
ii linux-modules-extra-5.8.0-36-generic 5.8.0-36.40~20.04.1
ii linux-modules-extra-5.8.0-38-generic
If anyone affected by this bug can still reproduce it in their
environments, I would like them to try installing linux-modules-extra
and rebooting to see if the issue clears. You will need to do this with
your 5.4 kernel.
Thanks in advance,
Terry
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Just a note: in attempting to fix this issue I borked my laptop - after
disabling UEFI boot and then re-enabling it in the BIOS settings, I
couldn't boot at all. So I reinstalled Ubuntu and then was getting the
following issue after doing system updates (but still on the 5.4
kernel):
The ctrl+alt+f2 - this was a fresh install on a system76 machine,
running the integrated graphics. I have since loaded the NVidia drivers
and my some miracle, I no longer need this work around.
The ttys run from 1 to 7, I think, but the keyboard shortcuts to
activate them are always
Charles, very interesting. Though I wonder if yours is a different
problem, partly because it's not in tty mode at all (for me it's in a
graphical mode, sometimes with the Dell logo up). I can't seem to switch
to tty2 using Alt-F2 or Ctrl-Alt-F2 -- what are the exact keys you're
using?
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You
I've got the same issue on a system76 gazelle - I just reinstalled 20.04
hoping that this would fix the issue, but the 5.8.0-38 kernel does not
complete the boot cycle by itself.
I have found that switching to tty2 and then back to tty1 causes the
boot to complete
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Maybe contains extra information.
** Attachment added: "Xorg.0.log"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1911352/+attachment/5453569/+files/Xorg.0.log
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I have the same problem on my Acer.
Since Kernel 5.8.0-36 and also 5.8.0-38 Ubuntu 20.04.1 cannot start in graphics
mode.
(It is possible to log in on the console using e.g. Ctrl+Alt+F4 though.)
With Kernel 5.4.0-58 the system works as expected.
The problem occurs only on this system, which is
Good data point, thanks. It looks like there are some significant
differences between the 9550 and the 9560 that could explain that:
1) Next generation CPU: i7-6700HQ on the 9550 vs i7-7700HQ on the 9560
2) Intel HD graphics 530 on the 9550 vs 630 on the 9560
3) NVIDIA GTX 960M on the 9550 vs
Can't reproduce this on XPS 15 9560
BIOS Information
Vendor: Dell Inc.
Version: 1.20.0
Release Date: 07/21/2020
Linux acelan-xps15-9560 5.8.0-36-generic #40~20.04.1-Ubuntu SMP Wed Jan
6 10:15:55 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux
nvidia, 460.32.03, 5.8.0-36-generic,
** Changed in: linux (Ubuntu)
Status: Incomplete => Confirmed
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Title:
Black screen on boot after 20.04 upgraded to kernel
The kernel it's trying to run (assuming it's the top one in the
"advanced options" boot list) is 5.8.0-36-generic.
I run apport-collect in case it helps -- boy, that's noisy in terms of
number of comments. :-)
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apport information
** Tags added: apport-collected
** Description changed:
Yesterday Ubuntu asked me to reboot after automatic updates, and when I
rebooted it doesn't start up. Sometimes it stays on the Dell logo,
sometimes it goes to a black screen and doesn't get past that (not sure
Ben, can you tell us if it was 5.8.0-34 kernel or later?
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Title:
Black screen on boot after 20.04 upgraded to kernel 5.8
Status in
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