On Thu, May 16, 2024 at 6:46 AM Stephen Morris <samorris@xxxxxxxxxxxxxxx> wrote:
I used dnf to system-upgrade to F40, which downloaded all the relevant
packages, and then I rebooted through dnf.
Did you do all the steps in <https://docs.fedoraproject.org/en-US/quick-docs/upgrading-fedora-offline/>?
The restart updated all the packages and automatically rebooted when it
was finished.
When the grub menu was displayed after the reboot it was obvious that
the upgrade did not update the grub config as there was no entry to boot
off the F40 installed kernel.
I booted to the display manager which I think is still gdm, and the
first thing I noticed there was the "plasma on xorg" selection had been
removed but the "Gnome on xorg" and "Gnome Classic on xorg" were still
there.
I selected the "Plasma" entry and booted into Plasma.
Having loaded Plasma I then went into the system entries menu and went
through all the options again, and it was obvious from this that the
display options I had configured with F39 had been wiped with F40. I
configured the display settings again and set the new HDR option as I
have a HDR monitor.
After the configuration changes I rebuilt the grub menus using
grub2-mkconfig to get a boot entry for the new kernel, and rebooted.
With the reboot from the new kernel, and for that matter any of the
older kernels, I got a message that the nvidia driver was not found and
it was falling back to the nouveau driver, I don't know how as the
nvidia driver was black listed in the grub menus.
Which nvidia driver was blacklisted (nouveau or nvidia-???)? There have been
problems with older Nvidia cards. Were you using nouveau on F39 or nvidia, and
how did you install the nvidia driver (there are multiple sites with different installers).
My old iMac uses 470xx from rpmfusion, which was initially in no-maintainer status
and required a simple patch to run on current kernels. Last I check the driver was in
testing.
From the display manager I loaded Plasma as I did after the first
upgrade boot, and Plasma displayed a black screen and never went any
further, irrespective of how long I left it for, and the only way I
could get out of that state was to use the physical reset button on the
computer.
On reboot, if I selected "Gnome" or "Gnome on Xorg", gnome would start
up quite happily, but logging out and starting Plasma would still hang
the computer.
So rebooting again to the display manager login screen, I used
ctrl+alt+F2 to switch to a terminal login process. Logging into the
terminal the first thing I did was use mokutil to check the uefi status
and it told me that uefi was disabled even though it was enabled in the
bios.
I checked whether the signing key was enrolled and it was, but the
system wasn't using the nvidia driver even though it was installed, and
a reinstall of kmod-nvidia and akmod-nvidia did nothing to alleviate the
issue.
Many users have had problems with the akmod-nvida install. For 470xx
the module failed to compile. For newer cards, users sometimes end up
with unsigned drivers. This usually means they rebooted too quickly (during
the window after the module was compiled but before it was signed.).
So I uninstalled the kmod-nvidia module, and did a force re-enroll of
the uefi signed key (potentially with a new key), and then rebooted to
go through the mokutil enrolment required at boot. This did not resolve
the Plasm start issue, so I loaded Gnome.
Once in Gnome I started Firefox Nightly to do some net searches to see
if I could find a solution, and the one thing that did happen at this
point was the boot did not display the "falling back to nouveau"
message, but the start of firefox displayed a message that a gpu
couldn't be found on pci. Looking for a resolution to this I found an
entry about, as part of installed nvidia drivers, to ensure the gpu
firmware was also installed.
So I did a dnf install nvidia-gpu-firmware which was then installed as
it hadn't been already.
If you had installed nvidia-??? from a 3rd party repo the Fedora firmware
package might not be required, but it is needed for nouveau.
After installing the firmware I rebooted and started Plasma, which
successfully started without issues, and when I checked the video driver
it was finally using the nvidia driver.
This was a lot of work to resolve, and is the worst experience I've had
with any fedora system upgrade.
Blame Nvidia for forcing Fedora into convoluted workarounds instead of
helping make older hardware work on current kernels.
Rpmfusion is having difficulties finding volunteers to package software.
Fewer volunteers have access to older hardware and those that do are
getting old themselves and may be dealing with the problems facing older
people in our society, so rpmfusion falls down in their priority list.
George N. White III
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