Re: f35 and NVIDIA entanglement

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On 29/12/2021 18:17, Robert McBroom via users wrote:
My system has a NVIDIA GEFORCE GT 710 video card. It was working with f33 and rpmfusion drivers. Updating to f35 installed a driver that was for cards newer than the 710. Tried reverting to the 470.86 driver. All I could get was a blank screen. Cleared the rpmfusion driver and tried the NVIDIA binary 470.86 driver. The install seemed to go well but restart gets only a blank screen. Same with the newer 470.94 driver.
Now trying to use nouveau.

Ran the sequence

rm -f /usr/lib{,64}/libGL.so.* /usr/lib{,64}/libEGL.so.*
rm -f /usr/lib{,64}/xorg/modules/extensions/libglx.so
dnf reinstall xorg-x11-server-Xorg mesa-libGL mesa-libEGL libglvnd\*
mv /etc/X11/xorg.conf /etc/X11/xorg.conf.saved

The nouveau module did not load.

Went to /lib64/xorg/modules/drivers and ran

modprobe nouveau

lsmod|grep nouveau

shows

nouveau              2404352  0
mxm_wmi                16384  1 nouveau
video                  57344  1 nouveau
i2c_algo_bit           16384  1 nouveau
drm_ttm_helper         16384  1 nouveau
ttm                    81920  2 drm_ttm_helper,nouveau
drm_kms_helper        311296  1 nouveau
drm                   630784  4 drm_kms_helper,drm_ttm_helper,ttm,nouveau
wmi                    36864  4 hp_wmi,wmi_bmof,mxm_wmi,nouveau

ran

dracut -f

to update initramfs and did restart

graphical start does not connect to the server

System still trying to load nvidia instead of nouveau. Noted that /etc/X11/xorg.conf was still that installed by nvidia. My systems with ati cards do not have xorg.conf changed the name. startx still unsuccessful.
The Xorg.0.log file resulting is attached.

What can I do to get the system to give me a graphical desktop?

I have a GT710 in F34.  It was running the rpmfusion default driver, in 
the 470 series but without the 470xx label.  Earlier this week 'dnf 
update' wanted to install 495, the new (unlabelled) default which does 
not support that card, but I didn't accept.
Then the kde 'software updater' widget showed updates, but with a red 
dot.  It looked as if I could tick-to-disable just the nvidia updates, 
so I did and went ahead;  the driver updates happened anyway.

Without rebooting I tried

   dnf install --allowerasing akmod-nvidia-470xx

which ran the usual tests and started to go ahead, but then reported a file conflict.
So  I tried

   sudo rpm -e --nodeps xorg-x11-drv-nvidia-libs

followed by

   sudo dnf install --allowerasing akmod-nvidia-470xx kmod-nvidia-470xx

which all worked.

   sudo systemctl reboot

then rebooted as normal, but NVDEC tv decoding was not available until I also did
   sudo dnf install xorg-x11-drv-nvidia-470xx-cuda

HTH

John P
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