Discussion:
PROBLEM Please Help
(too old to reply)
Ashok Shankar Das
2006-08-18 06:22:58 UTC
Permalink
[1.] One line summary of the problem:
Network Transmission happens if mouse is moved continuously

[2.] Full description of the problem/report:
This is a weired problem I faced while trying the Linux-2.6.17-7
/8
You start pinging to a perticular IP then there will be no activity.
If The MOUSE is moved or if scroll wheel is scrolled then The ping
shows some activity.
I used MTR(MyTraceRoute) and ping Both gave the same result.


[3.] Keywords (i.e., modules, networking, kernel):
Networking, Mouse

[4.] Kernel version (from /proc/version):
Linux version 2.6.17.7 (***@thinlab) (gcc version 3.3.6) #2 Wed Jul
26 16:39:17 IST 2006

Linux version 2.6.17.8 (***@thinlab) (gcc version 3.3.6) #2 Thu Aug
17 18:30:15 IST 2006

[5.] Output of Oops.. message (if applicable) with symbolic information
resolved (see Documentation/oops-
tracing.txt)
NONE
[6.] A small shell script or example program which triggers the
problem (if possible)
NONE
[7.] Environment

[7.1.] Software (add the output of the ver_linux script here)
[7.2
.] Processor information (from /proc/cpuinfo):
***@localhost:~# cat /proc/cpuinfo
processor : 0
vendor_id : CentaurHauls
cpu family : 6
model : 9
model name : VIA Nehemiah

stepping : 8
cpu MHz : 796.167
cache size : 64 KB
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes

cpuid level : 1
wp : yes
flags : fpu vme de pse tsc msr cx8 mtrr pge cmov pat mmx
fxsr sse up rng rng_en ace ace_en
bogomips : 1594.38

[7.3.] Module information (from /proc/modules):

NO MODULES
[7.4.] Loaded driver and hardware information (/proc/ioports, /proc/iomem)
***@localhost:~# cat /proc/ioports
0000-001f : dma1
0020-0021 : pic1
0040-0043 : timer0
0050-0053 : timer1
0060-006f : keyboard

0070-0077 : rtc
0080-008f : dma page reg
00a0-00a1 : pic2
00c0-00df : dma2
00f0-00ff : fpu
01f0-01f7 : ide0
0378-037a : parport0
03c0-03df : vesafb
03f6-03f6 : ide0
03f8-03ff : serial
4000-407f : 0000:00:
11.0
4000-407f : motherboard
4000-4003 : PM1a_EVT_BLK
4008-400b : PM_TMR
4020-4023 : GPE0_BLK
40f0-40f1 : PM1a_CNT_BLK
5000-500f : 0000:00:11.0
5000-500f : motherboard
5000-500f : pnp 00:02

e000-e0ff : 0000:00:11.5
e000-e0ff : VIA8233
e400-e4ff : 0000:00:12.0
e400-e4ff : via-rhine
e900-e90f : 0000:00:11.1
e900-e907 : ide0
ea00-ea1f : 0000:00:10.0
ea00-ea1f : uhci_hcd
eb00-eb1f : 0000:00:
10.1
eb00-eb1f : uhci_hcd
===============================
***@localhost:~# cat /proc/iomem
00000000-0009fbff : System RAM
0009fc00-0009ffff : reserved
000a0000-000bffff : Video RAM area
000c0000-000c7dff : Video ROM

000d0000-000d9fff : Adapter ROM
000f0000-000fffff : System ROM
00100000-06feffff : System RAM
00100000-004ddc78 : Kernel code
004ddc79-006ce6fb : Kernel data
06ff0000-06ff2fff : ACPI Non-volatile Storage

06ff3000-06ffffff : ACPI Tables
e4000000-e7ffffff : 0000:00:00.0
e8000000-ebffffff : PCI Bus #01
e8000000-ebffffff : 0000:01:00.0
e8000000-e8ffffff : vesafb
ec000000-edffffff : PCI Bus #01
ec000000-ecffffff : 0000:01:
00.0
ed000000-ed00ffff : 0000:01:00.0
ee000000-ee0000ff : 0000:00:10.3
ee000000-ee0000ff : ehci_hcd
ee001000-ee0010ff : 0000:00:12.0
ee001000-ee0010ff : via-rhine
ffff0000-ffffffff : reserved



[7.5.] PCI information ('lspci -vvv' as root)
Note* as it is an small system i dont have lspci on it. the bellow is
a "cat /proc/bus/pci/devices" out put
0000 11063123 0 e4000008 00000000 00000000 00000000 00000000 00000000 00000000 04000000 00000000 00000000 00000000 00000000 00000000 00000000 agpgart-via

0008 1106b091 0 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
0080 11063038 b 00000000 00000000 00000000 00000000 0000ea01 00000000 00000000 00000000 00000000 00000000 00000000 00000020 00000000 00000000 uhci_hcd

0081 11063038 c 00000000 00000000 00000000 00000000 0000eb01 00000000 00000000 00000000 00000000 00000000 00000000 00000020 00000000 00000000 uhci_hcd
0083 11063104 a ee000000 00000000 00000000 00000000 00000000 00000000 00000000 00000100 00000000 00000000 00000000 00000000 00000000 00000000 ehci_hcd

0088 11063177 0 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
0089 11060571 b 00000000 00000000 00000000 00000000 0000e901 00000000 00000000 00000000 00000000 00000000 00000000 00000010 00000000 00000000 VIA_IDE

008d 11063059 b 0000e001 00000000 00000000 00000000 00000000 00000000 00000000 00000100 00000000 00000000 00000000 00000000 00000000 00000000 VIA
82xx Audio
0090 11063065 b 0000e401 ee001000 00000000 00000000 00000000 00000000 00000000 00000100 00000100 00000000 00000000 00000000 00000000 00000000 via-rhine

0100 11063122 f e8000008 ec000000 00000000 00000000 00000000 00000000 ed000002 04000000 01000000 00000000 00000000 00000000 00000000 00010000
[7.6.] SCSI information (from /proc/scsi/scsi)

[7.7.] Other information that might be relevant to the problem

(please look in /proc and include all information that you
think to be relevant):
***@localhost:/proc/net# cat dev
Inter-| Receive | Transmit

face |bytes packets errs drop fifo frame compressed
multicast|bytes packets errs drop fifo colls carrier compressed
eth0: 72101 721 0 92 0 0 0 0
61735 362 0 0 0 0 0 0

lo: 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0
irlan0: 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0

========================
***@localhost:/proc/net# cat netlink
sk Eth Pid Groups Rmem Wmem Dump Locks
c6f9be00 0 0 00000000 0 0 00000000 2
c6ef0e00 4 0 00000000 0 0 00000000 2

c6e04400 10 0 00000000 0 0 00000000 2
c112da00 15 880 ffffffff 0 0 00000000 2
c6f9bc00 15 0 00000000 0 0 00000000 2
c6fc6200 16 0 00000000 0 0 00000000 2

==========================



[X.] Other notes, patches, fixes, workarounds:


This is a VIA Board for embeded systm.
The bios is PC compatible.
The 2.6.15 kernel works perfectly fine.
The config file for 2.6.15 and for 2.6.17 are same.
If needed i can give the kernel config file.

Please help me to overcome this problem.
--
Thanks
Ashok.
-------------
David Miller
2006-08-18 06:39:10 UTC
Permalink
From: "Ashok Shankar Das" <***@gmail.com>
Date: Fri, 18 Aug 2006 11:52:58 +0530
Post by Ashok Shankar Das
You start pinging to a perticular IP then there will be no activity.
If The MOUSE is moved or if scroll wheel is scrolled then The ping
shows some activity.
The IRQ for the network device is not being enabled properly. The
MOUSE happens to be on the same shared interrupt as the network
device so when you move it the interrupt handler for the network
device gets invoked too.

Just my guess...
Chris Wedgwood
2006-08-18 06:43:38 UTC
Permalink
Post by David Miller
The IRQ for the network device is not being enabled properly. The
MOUSE happens to be on the same shared interrupt as the network
device so when you move it the interrupt handler for the network
device gets invoked too.
Just my guess...
Some (a lot) of VIA silicon needs a quirk for interrupts to work
properly (ACPI should do the work for us but it's not reliable).

Please apply:

http://kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.18-rc2/2.6.18-rc2-mm1/broken-out/pci-quirk_via_irq-behaviour-change.patch

and see if that helps.
Ashok Shankar Das
2006-08-18 17:31:37 UTC
Permalink
Post by Chris Wedgwood
Post by David Miller
The IRQ for the network device is not being enabled properly. The
MOUSE happens to be on the same shared interrupt as the network
device so when you move it the interrupt handler for the network
device gets invoked too.
Just my guess...
Some (a lot) of VIA silicon needs a quirk for interrupts to work
properly (ACPI should do the work for us but it's not reliable).
http://kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.18-rc2/2.6.18-rc2-mm1/broken-out/pci-quirk_via_irq-behaviour-change.patch
and see if that helps.
I will try this On Monday ;)
Till then rest in peace.

But i will post problems if get unsuccess ;)
--
Thanks
Ashok.
-------------
Chris Wedgwood
2006-08-18 19:28:16 UTC
Permalink
Post by Ashok Shankar Das
But i will post problems if get unsuccess ;)
Please also let us know if it works.
Ashok Shankar Das
2006-09-01 17:50:06 UTC
Permalink
Hi Friends,
Yes the above patch worked for me On VIA board. Many many thanks for the help.
Well I am sorry to report back to you.

Anyways thanks.
Post by Chris Wedgwood
Post by Ashok Shankar Das
But i will post problems if get unsuccess ;)
Please also let us know if it works.
--
Thanks
Ashok.
-------------
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