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Re: IRQ Conflicts ?



On Wed, Jan 09, 2002 at 05:23:07PM +0100, Laurent VANCAILLIE wrote:
> I am using Debian Potato on a Dell Inspiron 3500.
> Sometimes when I am connected to 100 MHz networks through the PCMCIA card,
> all the applications which have to work with the PCMCIA card freeze. Then
> they come alive for a moment and again freeze.
> I am quite new to the Debian GNU/Linux world and I really wonder what it
> could be. The txqueuelen was at first set to 100. I set it to 200 to see
> if the problem was circumvented but no, it stays freezing.
> 
> Some informations :
> I am connected to a 100 MHz Hub
> 
> Linux kernel 2.2.18pre21 as he comes with the stable dist
> 
> When it freezes, ifconfig gives :
> eth0      Link encap:Ethernet  HWaddr 00:10:4B:FF:67:D1
>           inet addr:130.104.237.64  Bcast:130.104.237.255
> Mask:255.255.255.0
>           UP BROADCAST RUNNING  MTU:1500  Metric:1
>           RX packets:26897 errors:11 dropped:0 overruns:839 frame:17
>           TX packets:10322 errors:189 dropped:0 overruns:0 carrier:1
>           collisions:66 txqueuelen:200
>           Interrupt:10 Base address:0x280
> 
> lo        Link encap:Local Loopback
>           inet addr:127.0.0.1  Mask:255.0.0.0
>           UP LOOPBACK RUNNING  MTU:3924  Metric:1
>           RX packets:48 errors:0 dropped:0 overruns:0 frame:0
>           TX packets:48 errors:0 dropped:0 overruns:0 carrier:0
>           collisions:0 txqueuelen:0
> 
> Contents of /proc/interrupts is :
>           CPU0
>   0:    1203191          XT-PIC  timer
>   1:      22289          XT-PIC  keyboard
>   2:          0          XT-PIC  cascade
>   8:          1          XT-PIC  rtc
>  10:      34882          XT-PIC  i82365, eth0
                                   ^^^^^^
Hmm, that's probably not good, I think your laptop has a CardBus
bridge, not the old 82365 PCMCIA bridge. The 2.4 kernels have the
yenta_socket module for CardBus bridges, my experience is that
linux-2.4 has much better support for the exotic hardware found in
laptops.

If you want to run linux-2.4, you could either choose to use Adrian
Bunk's 2.4 debs on top of Potato, or consider upgrading to testing.


Erik

-- 
J.A.K. (Erik) Mouw, Information and Communication Theory Group, Faculty
of Information Technology and Systems, Delft University of Technology,
PO BOX 5031, 2600 GA Delft, The Netherlands  Phone: +31-15-2783635
Fax: +31-15-2781843  Email: J.A.K.Mouw@its.tudelft.nl
WWW: http://www-ict.its.tudelft.nl/~erik/



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