On Sat, 2 Jan 2016 16:58:35 +0000 (UTC) Beartooth <beartooth@xxxxxxxxxxx> wrote: > > I'm getting an ancient horror message from my old HP w2207h > flat panel monitor. I have a KVM switch between it and three > different PCs, of which the newest (#1) is running F23, the oldest > (#3) F22, and the middle F22 or F23 (I disremember which). > > About the time any of them finishes booting, the HP > immediately slaps up a box over the top of the login box, complaining > that the signal is out of range, and goes black. > > This monitor used to exercise this perversity when it was > new, and it was a real bear (not to say a mother) to correct. If I > recall aright, you had to get into xorg.conf somehow, guess the > changes it wanted (and where it wanted them), make those changes, and > reboot. > > That was years ago, and hasn't xorg.conf bitten the > cyber-dust long since? PCs # 1 & 2 have been peacefully running > Fedora; I think #3 still has CentOS 6, but will switch to F23 as soon > as I can get to it. I think the xorg.conf disappeared because monitors were queried for their EDID (configuration) information, and X was automatically set to that. Is it possible that the EDID information is not getting through or is getting mangled? What happens if you remove the KVM switch and boot with one of the systems directly connected to the monitor? If it is successful, the EDID information is being mangled by the KVM. If I remember correctly, it is possible to capture the EDID information of a monitor(I've forgotten the details), and tell X to use that EDID information, skipping the read step. If that is true, then you can capture the EDID information from the successful boot, and transfer it to all the systems, and no longer have the problem. If a direct connect boot isn't successful, it might be that the monitor is failing, and so isn't sending the proper information. -- users mailing list users@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe or change subscription options: https://admin.fedoraproject.org/mailman/listinfo/users Fedora Code of Conduct: http://fedoraproject.org/code-of-conduct Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines Have a question? Ask away: http://ask.fedoraproject.org
