Hi QLers,
I’m between work and home and did find some time to make some short videos
about the freeze case. Here they are:
QL/E (v3.11, SMSQ/E v3.22, QPAC2 v4.02) freezes!
http://youtu.be/wcngRwkvc5w
QL/E (v3.11, SMSQ/E v3.22, SMSQmulator v2.12) freezes!
http://youtu.be/HZ9jj162UN4
QL/E (v3.11, SMSQ/E v3.22, QPAC2 v4.02) workaround prevents freeze!
http://youtu.be/D07vYHsvA80
QL/E (v3.11, SMSQ/E v3.22, QPAC2 v4.02) no freeze when QDT is disabled!
http://youtu.be/b-rc6PZASyc
I’m posting this message with my iPhone and will reply to all your replies when
I will be using my home PC, but this can be later on this week.
QL forever!
Urs
Von meinem iPhone gesendet
> Am 21.03.2016 um 00:59 schrieb Marcel Kilgus :
>
> Urs Koenig (QL) wrote:
>> Because we have a Windows Freeze case at work which is very hard to trace
>> and analyse (visitors of the ZX-TEAM meeting will know) I wanted to at least
>> catch the QL/E Freeze case.
>> Last Thursday I was repeatedly able to reproduce the freeze using my QL/E
>> v3.13 wip (work-in-progress). I then reduced the steps needed to get the
>> freeze. In the end I can say you can get the freeze when doing this
>> scenario:
>> 1. Start QL/E (e.g. start QPC2.exe).
>> 2. From now on do not use the mouse, do not use the mouse pointer.
>> 3. After the BOOT sequence of QL/E is completed (SBASIC job 0 is minimised
>> as "System" in the button frame, wait until Photo QL has completed
>> displaying the QL collection photo) press +<\> to pick "System".
>> 4. Now that you see the BOOT process windows in the middle of the screen
>> press + to pick QPAC2 "Files".
>> 5. Once QPAC2 "Files" is on screen press then followed by
>> to choose the drive "WIN1_" as the Source Directory.
>> 6. Now the QL/E system freezes!
>
> Okay, I can reproduce it. But the crash happens in the screen driver.
> The problem is that SMSQ/E does not have any kind of memory protection
> and you're loading a quadrillion extensions at boot-time. Any one of
> them could be responsible of corrupting the memory in a way that QPAC2
> will crash later on without being at fault itself.
>
> Trying to track down these kind of problems is a huge pain, not sure
> if I can find the time to do so.
>
> Cheers, Marcel
>
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