Date: Tue, 26 May 2009 13:44:39 -0500 From: Robert Noland <rnoland@FreeBSD.org> To: perryh@pluto.rain.com Cc: freebsd-x11@FreeBSD.org Subject: Re: re-probing DDC/EDID Message-ID: <1243363479.2926.1082.camel@balrog.2hip.net> In-Reply-To: <4a1baf8e.Lz5OEp/BR3fkQ%2BQO%perryh@pluto.rain.com> References: <4a164879.9A1SKOjgHUb7X9q6%perryh@pluto.rain.com> <1243015185.63754.104.camel@balrog.2hip.net> <4a1724c4.OuQCIyZ462E1cHYx%perryh@pluto.rain.com> <1243089327.63754.1345.camel@balrog.2hip.net> <4a1a288f.Z0ZX9ngtqKNukKbL%perryh@pluto.rain.com> <1243259500.1787.986.camel@balrog.2hip.net> <4a1b09b3.ewnqp2rizVfsYpk5%perryh@pluto.rain.com> <1243293431.1704.387.camel@balrog.2hip.net> <4a1baf8e.Lz5OEp/BR3fkQ%2BQO%perryh@pluto.rain.com>
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--=-Ga4z2lWCpEtb6Q2CVMfv Content-Type: text/plain Content-Transfer-Encoding: quoted-printable On Tue, 2009-05-26 at 01:59 -0700, perryh@pluto.rain.com wrote: > Robert Noland <rnoland@FreeBSD.org> wrote: >=20 > > On Mon, 2009-05-25 at 14:12 -0700, perryh@pluto.rain.com wrote: > > > Robert Noland <rnoland@FreeBSD.org!rnoland@agora.rdrop.com> wrote: > > >=20 > > > > If you look at your xorg log, you should see the modes > > > > that are probed and calculated for the display. > > >=20 > > > Indeed, but only during startup AFAIK. What I am looking for > > > is a way to repeat the probing and calculation, _without_ > > > restarting X. And yes, I recognize that -- since X is not > > > being restarted -- such an operation will not affect what is > > > being displayed: it will only produce a report. > > >=20 > > > The question is, is this possible? > > > > I am fairly certain that this happens when you do an "xrandr -q" > > Have you actually tried any of the things that I've suggested? >=20 > Yes. You suggested: >=20 > * Running "xrandr -q". I previously provided the output from having > done so, noting that it appeared to be reporting the monitor info > pertaining to the older monitor -- thus presumably cached at > startup -- rather than anything which might have been produced > by rerunning the probe after I had switched to the new monitor. > There are at least three resolutions provided by the new monitor > which are not in the "xrandr -q" report, and two of them (720x400 > and 640x350) are smaller than the old maximum of 1280x1024 and thus > presumably should not have been suppressed based on being too large > to be usable by the currently-running server. Furthermore, the > 342mm x 271mm screen dimensions reported by "xrandr -q" are those > of the old monitor; the new one is about 517mm x 324mm. Watch xorg.log while running xrandr -q. If you have a virtual set large enough to display the new larger mode then it will show up... robert. > * Finding out which display driver is being used. I replied that, > based on the xorg.conf produced by -configure, it appeared to be > ATI. (If there is a better way to find out, I don't know about it.) >=20 > * Removing the modelines from xorg.conf. I have not tried that, but > I have observed that "xrandr -q" does not seem to cause xorg.conf > to be reread, unless it is somehow able to do it without updating > any of the inode's three timestamps. (I'd expect it to update the > access time, or perhaps the inode-change time instead if it were > going to the trouble of explicitly setting the access time to its > prior value.) Thus I don't suppose that any change to xorg.conf > would become effective until a restart of X. >=20 > * Looking in the xorg log file, after running "xrandr -q", for a new > probe report. "xrandr -q" does not seem to have appended anything > to the xorg log file, nor does its manpage indicate that it should. --=20 Robert Noland <rnoland@FreeBSD.org> FreeBSD --=-Ga4z2lWCpEtb6Q2CVMfv Content-Type: application/pgp-signature; name="signature.asc" Content-Description: This is a digitally signed message part -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.11 (FreeBSD) iEYEABECAAYFAkocOJcACgkQM4TrQ4qfROO9SwCfT10qXAaPCjeCsYcVaD+8ycrR qrEAn2U6fOzp358urbW+729kT0gCzc5f =ducq -----END PGP SIGNATURE----- --=-Ga4z2lWCpEtb6Q2CVMfv--
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