On Tue, Jul 02, 2019 at 05:38:35PM -0700, Misc User wrote: > On 7/2/2019 2:45 PM, Henry Jensen wrote: > > Greetings, > > > > to keep it short: > > > > - older Fujitsu Esprimo PC, Core2Duo, Integrated Intel Graphics > > - 2 monitors, connected at VGA and DVI > > - during installation both monitors were on all the time. > > - Computer switched on, both displays on, boot begins > > - inteldrm kicks in, the monitor at the DVI port switches OFF (short > > message on the display says "power saving mode") > > - Xenodm starts, only at 1 display. xrandr reports only 1 monitor, Xorg log > > says DVI monitor is disconnected > > - similar behaviour on FreeBSD, but: > > - on Linux both monitors are working with drm and X. > > > > Where to begin to look? > > > > Kind regards, > > > > Henry > > > > > Can you post a dmesg, there were a -lot- of different video chips used > on the core2duo architecture and each has its quirks. Yours might be > actually supported, but a lot of them aren't.
inteldrm attaches to this all all integrated Intel video of that era. > > From what I remember, there is some kind of proprietary bit of firmware > that needs to be installed to get both outputs working simultaneously, > but it requires a binary blob to be injected into the driver. IIRC its > some undocumented set of registers that need to get their bits flipped > for the second output to be recognized by the itneldrm code. This is complete nonsense. I would not be surprised if the DVI output is SDVO. Building a kernel with 'option DRMDEBUG' added to the config will show some additional information in dmesg. It can be made more verbose by setting additional variables.
