[Simh] DECwindows issues

[Hans Hübner]

2018-07-18 18:04 GMT-04:00 Matt Burke <matt at 9track.net>:

> On 16/07/2018 18:33, Hans Hübner wrote:
> > If I run DECwindows on the qvss frame buffer backed by Xorg, the mouse
> > cursor jumps around erratically.
>
> You may be able to get around this problem by using captured input mode:
>
> sim> set qvss capture
>
> You need to do this before enabling the QVSS. Click in the video window
> to capture the mouse cursor and use Ctrl+Right Shift to release it.
>

This solved the erratic mouse behavior, but now (with V4.0-0 Current
15fd71b9) running VMS 5.5-2 and DECwindows on QVSS, I see either one of the
DECwindows processes (window or session manager) use more than 50% of the
VAX CPU or, if I kill both processes, the emulator taking up 100% of its
host CPU with no VAX process showing up in MONITOR PROC/TOPCPU.  The
emulated system is too slow to be used, effectively.

I don't see that behavior when running DECwindows on a remote display, so
it seems to be connected to QVSS.  If I can provide any additional
information to diagnose, let me know.

Thanks,
Hans

load -r ka655x.bin
attach nvr nvram.bin
set cpu 64m
set cpu idle
set qvss capture
set qvss enable
set rq0 ra92
set rq1 ra92
set rq2 ra92
set rq3 cdrom
attach rq0 sys55.dsk
attach rq1 user.dsk
attach rq2 data.dsk
set rl disable
set xq mac=08-00-2B-AA-BB-CC
attach xq tap:tap0
dep bdr 0
boot cpu
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