[redirecting side topic to mailing list] On Mon, Mar 20, 2017 at 08:56:58PM +0100, Sven Joachim wrote: > On 2017-03-20 15:18 -0400, G. Branden Robinson wrote: > > > I'm at a loss, then. As you originally suspected, maybe it is a > > graphics driver issue. Attaching Xorg.log[2]. > > Apparently you have an Intel GPU and use the modesetting(4) driver (the > default). You could try to disable acceleration > (Option "AccelMethod" "none" in xorg.conf) or use the intel driver > (cp /usr/share/doc/xserver-xorg-video-intel/xorg.conf /etc/X11), and see > if that makes a difference.
I beg your indulgence. If you don't have it to spare, just tell me to JFGI and I will, but I see some humor and irony in my situation. Plus I like reconnecting with old Debian colleagues. I don't precisely know how to do this. I've never had to actually fight with a modularized xorg.conf file before. I have, however, consulted xorg.conf(5) and modesetting(4). Here's what I think I need to do: 1) Create /etc/X11/xorg.conf.d. (done) 2) Write a file to put in there. (in progress) 3) Restart the X server. I enabled zapping[1] so this is easy. The problem is that an Identifier is mandatory for the Device Section I am writing, and I cannot tell from my Xorg.0.log file what identifier is "autodetected". How do I figure this out? I am attaching my untested conf file. > Disabling the PageFlip option in xorg.conf might help to avoid those. I did see that; thanks. That's the next problem I'm going to tackle after my precious missing underscore. (My work habits involve maximized xterms and vertically-split vim windows; those, combined with the monitor I'm using and my aging eyes, mandate the 14-point font size.) But in the meantime I did want to report that problem because frankly it's insane to be dumping that much redundant crap into the log file. syslog has had message rate limiting for decades, and the Linux kernel for several years at least. Someone was not thinking. Regards, Branden [1] It's very nice to have this configurable via XKB and the keyboard-configuration package these days!
Section "Device" Identifier "mystery" Driver "modesetting" Option "AccelMethod" "none" # Option "PageFlip" "off" EndSection