[xmonad] urxvt slow rendering

[Richard Watson]

Thanks for your responses! Much appreciated.

Regarding compton -- AFAIK I'm not using compton or any compositing 
tools. Should I be?

I had suspected that it was some kind of Xorg/video config/interaction.

I'm using the ATI radeon driver (video card is Radeon HD 8490).
with vanilla xorg.conf

Section "Device"
	Identifier  "aticonfig-Device[0]-0"
	Driver      "fglrx"
	BusID       "PCI:1:0:0"
EndSection

Any suggestions of what I should do?
What config files to look at?
Software to install?

--Richard

On 09/03/17 02:01, Brandon Allbery wrote:
> Yes, this does sound video driver related. The compton config change is
> a workaround; XRender is far from being the ideal backend for
> compositing (the glx backend is usually preferred) but in this case the
> video driver is apparently not handling it well. In fact this sounds
> like the bugs I had using compton+glx under VMware video emulation that
> went away when I ran directly on the hardware.
>
> On Wed, Mar 8, 2017 at 5:34 AM, vrs <vrs+xmonad at synkretie.net
> <mailto:vrs+xmonad at synkretie.net>> wrote:
>
>     I used to have that problem, turning off terminal transparency helped.
>     Not a fix but at least a workaround. I suspect the video driver because
>     it was a change in driver that caused it, if I recall correctly.
>
>     Quoting Richard Watson (2017-03-08 03:17:18)
>     > Hello
>     >
>     > I've been a long-time xmonad user (over 5 years) on all my machines,
>     > installing using the Debian package.
>     >
>     > I'm currently running Debian jessie kernel 3.16 on my main desktop.
>     >
>     > Recently I upgraded Debian on my primary desktop (jessie kernel 3.16).
>     > I'm running xmonad v0.11,  instead of v0.10 on my other machines.
>     >
>     > I notice that when certain GUI application are running (e.g. Chrome,
>     > vmplayer, but not firefox & thunderbird) my urxvt terminal renders
>     > *really* slowly, redrawing the window line at a time! I also notice a
>     > huge X server CPU load (25-50%, as shown by top).
>     >
>     > I've looked at X server logs and config and cannot see anything
>     that is
>     > unusual.
>     >
>     > Could there be an xmonad issue here? Has anyone else experienced
>     > something similar?  Any hints as to how to debug this?
>     >
>     > --Richard Watson
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> --
> brandon s allbery kf8nh                               sine nomine associates
> allbery.b at gmail.com <mailto:allbery.b at gmail.com>
>          ballbery at sinenomine.net <mailto:ballbery at sinenomine.net>
> unix, openafs, kerberos, infrastructure, xmonad        http://sinenomine.net
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