View topic - QNX 6.5.0 crashes
QNX 6.5.0 crashes
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QNX 6.5.0 crashes
Hello I have a serious problem.
QNX crashes without warning. The crashes are completely arbitrary, for example:
1 case:
I launch QNX on my PC and I start the terminal and execute the "ped" command to open a file with the QNX texteditor -> crash(QNX does not react at all, the computer mouse does not move and the system does not respond to keystrokes)
2 case: I launch QNX on my PC I start a terminal then, when I'm typing a command into the terminal or I'm writing a programm in the texteditor -> crash(same behavior as case 1)
3 case: I launch QNX on my PC and I plug an USB-Stick in the port -> crash(same behavior as case 1)
And I still have x more examples where QNX crashes. What I'm saying is with all the examples I can't narrow down the problem. I have several times reinstalled the OS but that didn't solve the problem.
System:
processor=X86 num_cpus=2
cpu name=Pentium III Stepping 10 speed=2798
QNX crashes without warning. The crashes are completely arbitrary, for example:
1 case:
I launch QNX on my PC and I start the terminal and execute the "ped" command to open a file with the QNX texteditor -> crash(QNX does not react at all, the computer mouse does not move and the system does not respond to keystrokes)
2 case: I launch QNX on my PC I start a terminal then, when I'm typing a command into the terminal or I'm writing a programm in the texteditor -> crash(same behavior as case 1)
3 case: I launch QNX on my PC and I plug an USB-Stick in the port -> crash(same behavior as case 1)
And I still have x more examples where QNX crashes. What I'm saying is with all the examples I can't narrow down the problem. I have several times reinstalled the OS but that didn't solve the problem.
System:
processor=X86 num_cpus=2
cpu name=Pentium III Stepping 10 speed=2798
- Ifflag
- Active Member
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- Joined: Thu Apr 12, 2018 10:07 pm
- Location: Belgium
Re: QNX 6.5.0 crashes
I've a lot of experience with QNX and computers in general. It seems like you have unstable hardware. Here is what I would try. Turn off the power and open the case. Clean out any dust. If there is a lot of dust, you might have an overheating CPU. Check that all the fans are working. Remove memory and cards. Use a soft pencil eraser across all the contacts. Brush off or used compressed air. Reseat cards. Check again to see if the crashes continue. If they do, I would try new hardware.
QNX 6.5.0 has been in my experience very stable. The only problem I see is now and then, maybe every 6 months, Photon crashes. I'm pretty sure it is a random problem related to the video card.
QNX 6.5.0 has been in my experience very stable. The only problem I see is now and then, maybe every 6 months, Photon crashes. I'm pretty sure it is a random problem related to the video card.
- maschoen
- QNX Master
- Posts: 2730
- Joined: Wed Jun 25, 2003 5:18 pm
Re: QNX 6.5.0 crashes
Thanks for your reply, I will give it a try.
But I still wonder where is it coming from since all system processes like drivers, TCP/IP Stack, Process Manager, Application, ... run outside the micro kernel.
I've bought also a new hard disk and I will install QNX on the new one maybe this will change something.
Daniel B
But I still wonder where is it coming from since all system processes like drivers, TCP/IP Stack, Process Manager, Application, ... run outside the micro kernel.
I've bought also a new hard disk and I will install QNX on the new one maybe this will change something.
Daniel B
- Ifflag
- Active Member
- Posts: 10
- Joined: Thu Apr 12, 2018 10:07 pm
- Location: Belgium
Re: QNX 6.5.0 crashes
If the hardware is faulty, the system can't be stable. Especially when RAM, processor, HDD are guilty.
When the hardware is OK, a bad driver can still make the system unstable, even with a micro-kernel OS where the driver is run in application mode.
With QNX, there are 2 possibilities for a driver to do "bad things" :
- When using a IRQ handler. The IRQ handler is RUN in "kernel" mode, so bad things can happen.
- When using DMA. DMA (often) has full access to all system addresses. When a driver badly configures a peripheral DMA engine, bad things can happen.
When the hardware is OK, a bad driver can still make the system unstable, even with a micro-kernel OS where the driver is run in application mode.
With QNX, there are 2 possibilities for a driver to do "bad things" :
- When using a IRQ handler. The IRQ handler is RUN in "kernel" mode, so bad things can happen.
- When using DMA. DMA (often) has full access to all system addresses. When a driver badly configures a peripheral DMA engine, bad things can happen.
- nico04
- Senior Member
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- Joined: Wed Sep 29, 2010 9:59 am
- Location: France
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