On Wed, Apr 1, 2020 at 1:39 PM Paul Rogers <paulgrog...@fastmail.fm> wrote: > > > The effect you like is called panning. > > Thank you for that. I couldn't guess what the proper keyword would be for > searching, best I could think of was "sliding" and this got lots of hits on > vinyl windows! 8-( > > > > > I don't think it has anything to do with the Samsung or the Dell, but > > I'm quite sure it does. I've been doing lots of testing to identify the > problem. If you want the gorey details: I moved the HD from a box using a > Biostar TP43 MoBo w/ Core2-Duo "Conroe" CPU, Nvidia GeForce 6200 w/ NV44 GPU > PCI video, HPvs15 VGA monitor, to a Dell XPS-8700, "Haswell" CPU, GeForce > GT6351 w/ GK208 GPU PCIe-16 video, Samsung Syncmaster 730E monitor, with NO > configuration changes to X. Panning worked in the first box, not the second. > BUT, it also doesn't work with the same monitor, same software, on an Intel > S1200 "Sandybridge" server board with Intel's integrated graphics. The > common denominator is the monitor. I suspect the EDID is telling X something > different than the VGA monitor, that X is taking to mean "don't do panning", > that defaulted to panning on all the VGA monitors it has run on before. I > can't find any likely suspects in xorg.conf. >
Panning has nothing to do with the monitor. It comes down the the hardware limitations of the underlying device and what features are exposed via the driver for that device. The maximum framebuffer size is limited by the stride coordinate limits of the display hardware on the device. The device also needs to be able to dynamically adjust the offset of the display frame within the display surface. When you slide pan around with in the larger virtual desktop, the driver is changing the offset of the display controller as you move around. On top of the hardware requirements, the X driver also has to expose the necessary support for panning. Not all drivers do. Especially newer drivers which support randr 1.2 or newer. Alex > > rather with however you are trying to configure. > > It worked fine before moving the HD. > > > How exactly are you configuring? > > I attached my X log. > > > Also, you're using a very slow generic X driver (VESA) > > By choice. I don't need any advanced functions, so staying with the most > basic common driver gives me added flexibility to use it with different video > cards without reconfiguratiom. > > > that I suspect may not support panning. > > Yes, it does. This same system worked just fine before I changed monitors as > described. It continues to work on other boxen with VGA monitors. > > > It's also possible that the problem is your distro's build > > My distro, to be sure. This is an LFS derived "distro" I hand-built, the > last of 9 versions since 2.4 kernels. > > > of 1.18.4 server or driver is broken WRT panning. > > My original complaint said it was working before I upgraded and got this new > monitor. It's not the server unless panning is monitor/EDID dependent. > > > ISTR panning was broken in the server for quite some > > time, depending on configuration method, and the patch to fix for which > > may not have been included in your quite old 1.18.4 version. > > It takes me a long time to build my distro from scratch. I could upgrade the > server, as long as it would retain compatibility with everything else in this > version of X-7.2. I don't want to go into "dependency hell"! > > > > > Please show us your GPU specification, thus: > > > > # inxi -Gxx > > > > [10:32 ~]# inxi -Gxx > -su: inxi: command not found > [10:32 ~]# > > The GPU ID is in the log, Nvidia GK208. > > -- > Paul Rogers > paulgrog...@fastmail.fm > Rogers' Second Law: "Everything you do communicates." > (I do not personally endorse any additions after this line. TANSTAAFL :-) > _______________________________________________ > xorg@lists.x.org: X.Org support > Archives: http://lists.freedesktop.org/archives/xorg > Info: https://lists.x.org/mailman/listinfo/xorg > Your subscription address: %(user_address)s _______________________________________________ xorg@lists.x.org: X.Org support Archives: http://lists.freedesktop.org/archives/xorg Info: https://lists.x.org/mailman/listinfo/xorg Your subscription address: %(user_address)s
