Very Computer

Quote:> I am running Redhat 6.0 with the 2.2.5-15 kernel as shipped and I am
> experiencing random "lockups" where the keyboard and mouse stop responding

I'm not convinced that these are 'random' lock-ups.  Does this tend to happen after switching from X to the console and back... or when running a certain program... you must have noticed something that you do which causes the mouse and keyboard to freeze.  X is fairly stable and something else is usually reponsible for errors.

Regards
Steve

I know the kernel and the X server continue to run as the clock and process
list windows are updated even when the keyboard and mouse are locked.

Rather suprisingly Windows 95  and Windows NT 4 Workstation *do not* exhibit
the same problem when run on this machine.

My hardware is as follows: -

Abit BM6 motherboard (BX chipset)
Celeron 400MHz CPU
128MB PC100 SDRAM DIMM
IBM GXP14 14.4GB UDMA33 HD
Matrox Marvel G200 on IRQ11
Creative Labs SoundBlaster 64 PCI on IRQ 5
Diamond Supra Express 33.6iSP internal ISA modem configured as COM3
Cherry G80-3000 PS/2 keyboard
MS Intellimouse PS/2 v1.1a on /dev/psaux

Has anyone else encountered such problems and effected a cure?

Thanks in advance,

Nigel.
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Nigel Mellor
Objective Software Development Ltd

http://www.osdltd.demon.co.uk

Quote:> Nigel,

> I'm not convinced that these are 'random' lock-ups.  Does this tend to

Quote:

> Regards
> Steve

Thanks for the feedback.

So far I haven't been able to establish a pattern. The last time it froze on
me Linux had been running for a good couple of hours and I was 30 minutes
into a game of Sokoban.

I've been thinking about this a bit more and I have formulated a theory:

When the mouse and keyboard freeze, the rest of the hardware (and software)
appears to continue to function. The keyboard and mouse use separate IRQs (1
and 12 respectively) but AFAIK they share a common bit of hardware. This
used to be an Intel 8029 keyboard controller IC but I understand that the
8029 functionality is now emulated in hardware in the WinBond ASIC used in
most BX chipsets for onboard peripheral I/O.

I am going to try the latest X server for my Matrox G200 (XF86-SVGA) and
failing that I'll start digging around in the source code. Maybe the 8029 is
being disabled inadvertently.

thanks,

Nigel.
--
Nigel Mellor
Objective Software Development Ltd

http://www.osdltd.demon.co.uk

I missed the beginning of this thread, but if it relates to Compaq
equipment, then the answer is that they do just that. 2.2.x kernels
are less susceptibel than 2.1.x.

--
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               Politics: The conduct of public affairs for private advantage
                        Ambrose Bierce
Raphael Mankin

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As before, the rest of the system is OK - doing 'switchto 1' will get
control back. What made you suggest that switching VCs would cause the
problem? Is there a known solution?

My system is similar to Nigel's - Abit BX motherboard, Matrox Mil G200
and a Logitech PS/2 wheelmouse running RedHat 6.0. When locked, xosview
continues to update but the keyboard and mouse IRQ LEDs fail to light
up.

Thomas Leonard
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3rd year computer science
RISC OS and Unix software to download at http://www.ecs.soton.ac.uk/~tal197/