On Wed, Apr 27, 2022 at 05:07:14PM -0400, Nick Holland wrote: > On 4/27/22 9:15 AM, David Demelier wrote: > > Hello, > > > > I have a lenovo thinkcentre machine connected to 24” LG screen (with > > 4k resolution), the installer boots fine using UEFI but it looks like > > efifb takes a strange “squared” resolution where bottom part of the > > console is below the screen so I’m unable to see what I type. I’ve > > taken a picture of what’s seen: > > > > http://markand.fr/static/openbsd-resolution.jpeg > > > > I have tried disabling inteldrm using UKC as I’ve seen on some > > websites with somewhat similar problem but with no effect. I’ve also > > noticed there is no wscons(cfg|ctl) utilities in the installer so I > > was unable to blindly type commands to alter the resolution either. > > Unfortunately, changing boot video mode using `machine video …` does > > not change kernel resolution either. > > > > My only solution for now would be to boot not using UEFI but that’s > > something I’d like to avoid if possible. > > > > Do you have any idea why an incorrect resolution is picked up by the > > kernel? I’m using install71.img on USB stick FYI. >
Does: boot> machine gop (then machine gop followed by some mode number) work? -ml > The installer kernel is very limited in its abilities, and if I understand > UEFI (which I don't), the install kernel is more-or-less locked into using > what the firmware sets up. "man efifb" kinda hints that I might be right > on this. > > In short: probably not a lot you can do with the install kernel to fix > the problem. And hopefully, once installed, the "real" kernel will be fine > with your monitor. > > HOWEVER, 4k monitors and their support are interesting. I have an old HP > netbook with an AMD competitor to the Intel Atom chips which just took off > and ran with an HDMI 4k monitor, and a much more capable and newer Thinkpad > which didn't work properly at all with 4k (in both OpenBSD and Windows). > > You might want to start with a firmware upgrade for your machine in question, > see if that helps. If not, a few ideas: > > * Boot the installer, drop to shell, hit "clear" to put the cursor back at > the top of the screen and do your install, taking defaults as much as > possible to minimize dialog, and defaults for everything after the text rolls > off the bottom of the screen, and clean it up later. > > * Do a serial install (aren't I funny? As if there is a serial port on a > machine with an HDMI port! But maybe there is...Maybe I should go buy > a lottery ticket, too). > > * Try the install with a 1920x1080 or lesser resolution monitor. > > * Move the hard disk to another UEFI machine and do the install on it, then > move the disk back, hoping the other machine works better for the installer. > > Nick. >
