nvidia304 hangs with fc23 kernel - SOLVED

[John Pilkington]

On 30/06/16 11:48, John Pilkington wrote:
> Yesterday I ran dnf system upgrade from fc22 to fc23.  It all seemed
> very smooth (4185 packages) until it rebooted to emergency mode.  After
> repairs by fsck it runs happily under 4.4.13-200.fc22 but just hangs
> with a black screen and a flashing cursor with 4.5.7-200.fc23
>
> yumex-dnf seems inconsistent in reporting the state of the fc23 kernel,
> akmod-nvidia-304xx and kmod.  Now it is showing them as uninstalled,
> with 'Error(s) in search for dependencies' if I try to install the
> current 4.5.7-200.fc23
>
> An attempt to install 4.2.3-300.fc23 is apparently seen as a downgrade
> of 4.4.12-200.fc22 (not the running kernel) and is then rejected as
> conflicting.
>
> I suppose I can continue as is until the next kernel appears - but a fix
> would be better :-)

Solved.  While running with 4.4.13-200.fc22, from yumex-dnf I erased the 
existing kmod-nvidia-304xx for the fc23 kernel.  Then, as root,

# akmods --kernels 4.5.7-200.fc23.x86_64

which reported that it was building and installing nvidia-304xx-kmod,
and appeared to exit cleanly after several tens of seconds.

Rebooted with the fc23 kernel and all seems fine.

>
> I was able to rpmbuild --rebuild the rpmfusion mythtv-0.28-3.fc24 srpm,
> and have it running now.  Strangely, an attempt to update my earlier
> fc22 build of mythtv master failed with qt5 problems.
>
> John P
>