On an old laptop with Lubuntu 18.04, I have
sisfb working properly. It's not blacklisted at all and loads on boot.
The problem is that
sisfb is normally blacklisted in
/lib/modprobe.d/fbdev-blacklist.conf. While I can comment that line out, whenever the
udev package is updated using the weekly GUI update reminder,
/lib/modprobe.d/fbdev-blacklist.conf is overwritten. While I can use
chattr +i /lib/modprobe.d/fbdev-blacklist.conf to block the update from overwriting the file, that causes
udev updates to fail, which causes
apt full-upgrade to fail. Since the laptop is for the use of someone new to computers, this isn't a workable method.
How can I load
sisfb properly during boot?