Am 05.01.2016 um 11:41 schrieb poma:> > append to kernel cmdline: > drm_kms_helper.edid_firmware=DVI-I-1:edid/edid.bin > > $ cat /proc/cmdline > ... drm_kms_helper.edid_firmware=DVI-I-1:edid/edid.bin ... >Well, no banana. Yes, the kernel loads the edid, but the screen keeps blank if I switch the monitor to the system after bootstrap. )-: [ 20.319271] [drm] Got external EDID base block and 0 extensions from "edid/edid.bin" for connector "DVI-I-1" [ 20.347274] [drm] Got external EDID base block and 0 extensions from "edid/edid.bin" for connector "DVI-I-1" I also replaced that with the "dummy" edid/1280x1024.bin parameter, same thing. If I boot with the monitor connected, everything is fine. If I boot with it disconnected, no chance. I also tried to force the DVI connector on: video=DVI-I-1:e The result is that the kernel still loads the edid, but the screen remains now blank all the time, even if I boot with the monitor connected. Yes, it is really connected to DVI-I-1, at least according to xrandr without the "video" parameter, and with the monitor connected. Greetings, Thomas
On 05.01.2016 14:47, Thomas Richter wrote:> Am 05.01.2016 um 11:41 schrieb poma: > >> >> append to kernel cmdline: >> drm_kms_helper.edid_firmware=DVI-I-1:edid/edid.bin >> >> $ cat /proc/cmdline >> ... drm_kms_helper.edid_firmware=DVI-I-1:edid/edid.bin ... >> > > Well, no banana. Yes, the kernel loads the edid, but the screen keeps > blank if I switch the monitor to the system after bootstrap. )-: > > [ 20.319271] [drm] Got external EDID base block and 0 extensions from > "edid/edid.bin" for connector "DVI-I-1" > [ 20.347274] [drm] Got external EDID base block and 0 extensions from > "edid/edid.bin" for connector "DVI-I-1" > > I also replaced that with the "dummy" edid/1280x1024.bin parameter, same > thing. > > If I boot with the monitor connected, everything is fine. If I boot with > it disconnected, no chance. > > I also tried to force the DVI connector on: > > video=DVI-I-1:e > > The result is that the kernel still loads the edid, but the screen > remains now blank all the time, even if I boot with the monitor connected. > > Yes, it is really connected to DVI-I-1, at least according to xrandr > without the "video" parameter, and with the monitor connected. > > Greetings, > Thomas >Try your luck here http://lists.freedesktop.org/mailman/listinfo/dri-devel BTW what is actual KVM switch device, vendor/product?
Hi,> > Try your luck here > http://lists.freedesktop.org/mailman/listinfo/dri-develThe major problem is that there is no way to tell the nouveau kernel module to enforce a specific output. There is a video=XXX kernel parameter, but this only applies to the VGA framebuffer but not to the nouveau framebuffer.> BTW what is actual KVM switch device, vendor/product?This is an ATEN CS22D. It is "supposed to remember the EDID data", but frankly, it does not. Greetings, Thomas