Re: Secondary monitor switches off when inteldrm switches on
Am 3. Juli 2019 02:54:28 MESZ schrieb Jonathan Gray : >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. You are right, it is a SDVO ADD2 adapter. I'll se that I get this DRMDEBUG output.
Re: Secondary monitor switches off when inteldrm switches on
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.
Re: Secondary monitor switches off when inteldrm switches on
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. 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.
Secondary monitor switches off when inteldrm switches on
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
