On Sat, Oct 20, 2018 at 1:28 AM Hans Petter Selasky <hps_at_selasky.org> wrote: > On 10/20/18 3:10 AM, Graham Perrin wrote: > > On 20/10/2018 00:01, Graham Perrin wrote: > > > >> kldunload radeonkms > >> > >> – results in a kernel panic. > > > > Found, at < > https://github.com/FreeBSDDesktop/kms-drm/issues/90#issuecomment-415859021> > under 'drm-devel-kmod g20180822 screen freeze': > > > >>> … normally you never unload the graphics driver so we haven't spent > time on proper cleanup. Also, the drm module will cause panic if you try > load load it again after unload. > > > > ---- > > > > Is the principle for -next- the same as for -devel-, should I simply > _never_ attempt to unload the module? > > > > $ date ; uname -v > > Sat 20 Oct 2018 02:06:21 BST > > FreeBSD 12.0-BETA1 r339438 GENERIC > > $ pkg query '%o %v %R' drm-kmod drm-next-kmod gpu-firmware-kmod > > graphics/drm-next-kmod 4.11.g20180822 poudriere > > graphics/gpu-firmware-kmod g20180825 FreeBSD > > I recommend building these modules from source, /usr/src which match you > currently installed kernel! > > --HPS > This is a really good practice for all kernel modules from ports. If you build your kernel from source, put them into /etc/rc.conf to define PORTS_MODULES to always rebuild all modules when the kernel is built. Even if you install packages for your release, you need to realize that packages are built against the oldest supported minor release of a major release and that works or all ports that only have to match system ABIs which remain stable for the life of a major release. But, while the KBI (Kernel Binary Interface) usually remains stable, it occasionally does and did between 11.1 and 11.2 which meant that two ports failed when installed from packages on 11.2 system until 11.1 went EOL this month. I really wish that the portsmgr team would come up with a policy to maintain an archive of port based kernel modules whenever there is a minor release where people who have broken systems can get trusted packages. Some people are really not very capable of building from ports. -- Kevin Oberman, Part time kid herder and retired Network Engineer E-mail: rkoberman_at_gmail.com PGP Fingerprint: D03FB98AFA78E3B78C1694B318AB39EF1B055683Received on Sun Oct 21 2018 - 03:26:07 UTC
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