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From: richard@octel.UUCP (Richard Karasik)
Newsgroups: comp.unix.sysv386
Subject: Re: VPIX / X11 / VT Swtiching -- Crash on ISC 2.0.2
Message-ID: <330@octel.UUCP>
Date: 8 Nov 90 18:55:26 GMT
References: <604@dptechno.UUCP>
Reply-To: richard@octel.UUCP (Richard Karasik)
Organization: Perkin-Elmer Inc., E-beam division, Hayward, Ca
Lines: 44

In article <604@dptechno.UUCP> dave@dptechno.uucp (Dave Lee) writes:
>I have found a reproducable problem with VT Switching on ISC 2.0.2
>Problem 1:
>	If I am running a graphics application in VPIX (on console), and
>do a lot of quick ALT-SYSREQ-F1 ALT-SYSREQ-F8 (swith to/from another VT)
>There will be some glitches in the graphics output on VPIX.  This seems
>to only occur when there is graphics drawing currently going on when the 
>Problem 2:
>	If I am running X11R3 (from ISC) on a VT, and VPIX on another VT,
>and do quick vt switches, then occasionally VPIX will crash, very quietly,
 ...
>

 I have seen both of these problems and am curious as to why they happen
 also. ISC hasn't been very helpful, but then it took them 4 weeks to
 figure out that I shouldn't have deinstalled TCP - even though I don't
 have a network -simply because some subsystems like looking glass, and
 the ptys need an include file that is in the TCP distribution disk -alas
 :-)  I have used up my free question and answer time.

 One particularly viscious version of these problems occurs when running
 solitile from vpix and finding out that it cant find the mouse. When I
 kill off the session from another VT -all the graphics goes blotto.
 That VT with a getty running and all still hasn't reset itself to be
 usable as a normal terminal (ie kill -15 etc is as bad as kill -9 ).
 There is graphics detritus all over the screen -forever until reboot.
 THere is no nice way to kill off the graphics stuff.

 In the latter case how do you mean vpix crashes! IF you mean it goes away
 and all of a sudden you're back in unix then thats what happens to me -no
 screen noise no nothing.. whammo -welcome to unix. I have not seen system
 crashes, but I have had to reboot to clear the hardware. I believe
 because software wasnt tracking what it did so didnt know how to get
 "sane".

 Also has anyone noticed that when switching into vpix and back out -all
 of a sudden none of the doscommands (eg dosget) can find the floppy disks
 anymore!

 Any solutions would be of interest.
Richard Karasik
 ..  richard@octel
 ..  vsi1!octel!richard
 ..  sun!kass!richard