Updating[edit]

Updating to a different release involves first updating the system, and then using the system-upgrade command.

# yum -y update
# dnf system-upgrade download --refresh --releasever=30
# dnf system-upgrade reboot

See: https://fedoraproject.org/wiki/DNF_system_upgrade#How_do_I_use_it.3F

Automatic Updates[edit]

On Fedora 22 or later, use dnf-automatic. This is actually the same but newer mechanism as yum-cron used in CentOS 7 but uses systemd timers rather than cron to initiate the update.

# dnf install dnf-automatic
## Edit /etc/dnf/automatic.conf so that apply_updates is set to 'yes'
# systemctl enable --now dnf-automatic-install.timer

To schedule automatic updates to happen only at a specific time or week day, edit the timer.

For example, the following timer only runs updates at the start of each week plus 1 hour and some random amount of time (between 0 and 5 minutes).

# cat /usr/lib/systemd/system/dnf-automatic-install.timer
[Unit]
Description=dnf-automatic-install timer
# See comment in dnf-makecache.service
ConditionPathExists=!/run/ostree-booted
Wants=network-online.target

[Timer]
OnCalendar=weekly
AccuracySec=1h
RandomizedDelaySec=5m

[Install]
WantedBy=multi-user.target

# systemctl list-timers --all | grep dnf-auto
Mon 2019-05-20 00:01:12 MDT  1 day 1h left Sat 2019-05-18 22:37:54 MDT  8min ago    dnf-automatic-install.timer  dnf-automatic-install.service

See Also: https://fedoraproject.org/wiki/AutoUpdates#How_are_automatic_updates_done.3F

Other[edit]

Disabling Nouveau Drivers[edit]

As mentioned at https://ask.fedoraproject.org/en/question/23982/how-to-disable-nouveau-in-fedora-18/, to disable the nouveau drivers (needed to install the nvidia drivers), you have to modify the initramfs image using dracut.

# dracut --force --omit-drivres nouveau /boot/initramfs-$(uname -r) $(uname -r)

I tried to do the usual modprobe.d to black list nouveau, but it didn't seem to work. I even added nomodeset on to the grub kernel cmdline but that also didn't seem to work...

Grub2 Configuration[edit]

Grub configuration needs to be updated by running

# grub2-mkconfig -o /boot/grub2/grub.cfg

The main grub configuration file is at /etc/default/grub. You must remake the configratuion for grub after you edit this file.

Cuda 8.0 on Fedora 26[edit]

Cuda 8.0 seems to need GCC 5.3.1. The closest I can find is GCC 5.3.0 at https://ftp.gnu.org/gnu/gcc/gcc-5.3.0/.

You may need to apply this fix: https://gcc.gnu.org/git/?p=gcc.git;a=commitdiff;h=ec1cc0263f156f70693a62cf17b254a0029f4852

Install any missing dependencies. These were missing on the existing Fedora 26 workstations in computer science:

libmpc-devel mpfr-devel

Compile on the system:

# ./configure --prefix=/usr/local/gcc-5.3.0 --disable-multilib
# make -j 8