On Wed, 4 Mar 2020 08:38:02 +0100 Sebastien Marie <sema...@online.fr> wrote:
> On Tue, Mar 03, 2020 at 10:57:03PM -0700, Duncan Patton a Campbell wrote: > > > > I've had problems getting an old Brother printer to work (again) > > and have managed to locate/understand? the source of the problems. > > > > 1. ulpt must be disabled: > > # config -ef /bsd > > ukc> disable ulpt > > ukc> quit > > > > 2. modifying the kernel changes the kernel checksum so to get it to relink > > sha256 -h /var/db/kernel.SHA256 /bsd > > > > 3. relinking the kernel _re-enables_ ulpt. > > > > So I'm going to have install the build system and run thru the kernel > > patches > > after I figure out how to disable ulpt in the GENERIC.MP build. > > > > Does this sound like it will work? > > Pratical advice: > > Depending your need, you could also live without kernel relinking (KARL) in > order to keep ulpt(4) disabled using config(8). > > I would still relink after an upgrade in order to have an unique /bsd (and not > the one publicly available from internet). > > So it would be: > - after an upgrade, reboot and wait relinking to be done (a fresh /bsd will be > installed) > - run `config -ef /bsd' and disable ulpt in the new (and unique) kernel > - do *NOT* regenerate /var/db/kernel.SHA256 (so sha256 will mismatch) > - reboot again and run on the new /bsd (with ulpt disabled) > > System will complains that relinking failed, but your /bsd with ulpt disabled > will stay. > Pretty much that's where I'm at. I'm gonna try again to get ulpt to work. Thanks, Dhu > > Developer advice: > > mpi@ already pointed the right way to deal with it: make ulpt(4) and ugen(4) > to > coexist. This way you could use cupsd (using ugen) with a GENERIC kernel. > > see https://marc.info/?l=openbsd-tech&m=151618565000531&w=2 for details > > Thanks. > -- > Sebastien Marie > > -- Je suis Canadien. Ce n'est pas Francais ou Anglaise. C'est une esp`ece de sauvage: ne obliviscaris, vix ea nostra voco;-)
