On Sun, 2008-02-03 at 17:30 +0000, Ben Hutchings wrote:
> This is a known bug that should be fixed in later versions of the
> driver. A fixed version of the driver is included in Linux 2.6.24.
> Please try installing that, if you can. I am still working on an update
> to rt2x00-source for use in 2.6.22 and 2.6.23.
I've now tried running the Thinkpad with linux-image-2.6.24-1-686 from
sid for a few hours (rest of the system remains entirely lenny).
Well, it behaves differently under 2.6.24:
- Seems to be very slow compared with 2.6.22+rt2x00. Under 2.6.24
iwconfig invariably says connected at 1Mbit (and this is confirmed by
iftop monitoring during file transfers). Under 2.4.22 the same file
transfers (NFS) have no problem running at >6Mbit/s (iwconfig under
2.4.22 doesn't actually list rate, but that's what iftop shows).
- Instead of the connection hanging up under load (fixable by
reinserting the wifi card under 2.4.22) the entire machine crashes hard.
I haven't tried a serial-cable console to see if it's logging anything
useful. It certainly seems to occur at the same sort of frequency as
the 2.4.22 hang, and is more likely under load.
- If I monitor the connection rate under 2.6.24
while true; do sudo iwconfig wlan0 ; sleep 10 ; done
then quite often before a crash I get a couple of logs reporting
17Mbit/s connection speed and things speed up noticeably (I run various
X11 things over wifi). Strange.
Note that I still have rt2x00-modules-2.6.22-3-686 2.0.12+git20071103-1
+2.6.22-6 installed (module-assistant built from rt2x00-source 2.0.12
+git20071103-3). I haven't rebuilt these vs 2.6.24 so I assume it'll
ignore that module and use its own builtin support.
dpkg-query -S "rt2?00pci.ko"
yields
rt2x00-modules-2.6.22-3-686:
/lib/modules/2.6.22-3-686/kernel/drivers/net/wireless/rt2x00pci.ko
rt2x00-modules-2.6.22-3-686:
/lib/modules/2.6.22-3-686/kernel/drivers/net/wireless/rt2400pci.ko
rt2x00-modules-2.6.22-3-686:
/lib/modules/2.6.22-3-686/kernel/drivers/net/wireless/rt2500pci.ko
linux-image-2.6.24-1-686:
/lib/modules/2.6.24-1-686/kernel/drivers/net/wireless/rt2x00/rt2x00pci.ko
linux-image-2.6.24-1-686:
/lib/modules/2.6.24-1-686/kernel/drivers/net/wireless/rt2x00/rt2400pci.ko
linux-image-2.6.24-1-686:
/lib/modules/2.6.24-1-686/kernel/drivers/net/wireless/rt2x00/rt2500pci.ko
so I guess it must be loading the intended things.
I could get hold of the crash console log by serial cable if it'd be
helpful. Any other suggestions ?
FWIW, iwconfig wlan0 outputs (MAC, key, ESSID obfuscated) for 2.6.24:
wlan0 IEEE 802.11g ESSID:"??????????"
Mode:Managed Frequency:2.432 GHz Access Point: ??:??:??:??:??:??
Bit Rate=1 Mb/s Tx-Power=27 dBm
Retry min limit:7 RTS thr:off Fragment thr=2346 B
Encryption
key:????-????-????-????-????-????-????-????-????-????-????-????-????-????-????-????
[2]
Link Quality=54/100 Signal level=-70 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:0 Missed beacon:0
and for 2.6.22:
wlan0 IEEE 802.11g ESSID:"??????????"
Mode:Managed Frequency:2.432 GHz Access Point: ??:??:??:??:??:??
Retry min limit:7 RTS thr:off Fragment thr=2346 B
Encryption
key:????-????-????-????-????-????-????-????-????-????-????-????-????-????-????-????
Link Quality=46/100 Signal level=-57 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:0 Missed beacon:0
Tim
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