Re: [Qemu-devel] [SOLUTION] "i8042.c: No controller found" -> OS sees no keyboard if I type "in BIOS"

[Mark Cave-Ayland <mark.cave-ayland@siriusit.co.uk>]

Mark Cave-Ayland wrote:

>>> -#define PS2_QUEUE_SIZE 256
>>> +#define PS2_QUEUE_SIZE 16
>>
>> 15? With 16 it can still break (broken BIOS?).
> 
> FWIW I wonder if this is also responsible for the bug report I posted here:
> 
> http://lists.gnu.org/archive/html/qemu-devel/2008-05/msg00853.html
> 
> Basically after a random length of time from 1 - 5 days, the mouse under 
> an NT4 guest goes crazy - a single touch and it goes flying randomly all 
> around the screen. Restarting the VM resolves the issue.

Sorry for resurrecting an old thread again, but thought it may be useful 
for the archives. I upgraded to kvm-86 and changed PS2_QUEUE_SIZE to 16 
for my troublesome NT4 guest, and when it fired up, the keyboard worked 
fine but the mouse would not respond.

I then tried raising PS2_QUEUE_SIZE to 32 and then both the mouse and 
keyboard started to work. I'll keep an eye on this and see whether it 
starts to behave strangely again with this smaller buffer size.


HTH,

Mark.

-- 
Mark Cave-Ayland - Senior Technical Architect
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