Bugzilla – Bug 932
Firmware restarts on heavy TX
Last modified: 2006-03-09 21:56:11
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Multiple restarts reported in dmesg when 3945 is transmitting: ipw3945: Microcode SW error detected. Restarting. ipw3945: Error Reply type 0x00000000 cmd TX (0x1C) seq 0x01DE ser 0x00000000 ipw3945: Can't stop Rx DMA. ipw3945: Detected geography ABG (11 802.11bg channels, 9 802.11a channels) # Exact steps to reproduce Happens when transmitting under heavy load. Seems to be somehow related to bluetooth being enabled. # Reproducability of bug (e.g. intermittent or 100% reproducable) 100% # Did this problem not exist in previous version of the driver? All released versions to 0.0.69 # kernel version 2.6.15 + FC4 patches # AP brand/model Netgear 624WGT v3 # dmesg output at debug level 0x43fff ipw3945: Microcode SW error detected. Restarting. ipw3945: Start IPW Error Log Dump: ipw3945: Status: 0x1C0041F0, Config: 00000102 count: 1 ipw3945: Desc Time asrtPC const ilink1 nmiPC Line ipw3945: SYSASSERT (#5) 0x85B5E558 0x000006E6 0x000039C2 0x000002AC 0x00000000 3242 ipw3945: Start IPW Event Log Dump: count 256 type 0x00 ipw3945: 0x00000001 0x0000016d ipw3945: 0x00000001 0x008056e0 ipw3945: 0x00000001 0x008056fc ipw3945: 0x00000001 0x00000000 ipw3945: 0x00000001 0x00000177 ipw3945: 0x00000001 0x008056e0 ipw3945: 0x00000001 0x00805704 ipw3945: 0x00000001 0x00000000 00000000 03 0B 00 2D 80 00 00 24 00 00 00 15 0F 00 13 02 ...-...$ ........ 00000010 06 74 13 00 14 6C 3B 4B A6 02 00 64 00 .t...l;K ...d. ipw3945: Error Reply type 0x00000000 cmd TX (0x1C) seq 0x0005 ser 0x00000000 ipw3945: Can't stop Rx DMA. ipw3945: Detected geography ABG (11 802.11bg channels, 9 802.11a channels) ipw3945: Microcode SW error detected. Restarting. ipw3945: Start IPW Error Log Dump: ipw3945: Status: 0x1C0041F0, Config: 00000102 count: 1 ipw3945: Desc Time asrtPC const ilink1 nmiPC Line ipw3945: SYSASSERT (#5) 0x863B6941 0x000006E6 0x000039C2 0x000002AC 0x00000000 3242 ipw3945: Start IPW Event Log Dump: count 256 type 0x00 ipw3945: 0x00000001 0x0000016d ipw3945: 0x00000001 0x008056e0 ipw3945: 0x00000001 0x008056fc ipw3945: 0x00000001 0x00000000 ipw3945: 0x00000001 0x00000177 ipw3945: 0x00000001 0x008056e0 ipw3945: 0x00000001 0x00805704 ipw3945: 0x00000001 0x00000000 00000000 03 0B 00 2D 80 00 00 24 00 00 00 15 0F 00 13 02 ...-...$ ........ 00000010 06 74 13 00 14 6C 3B 4B A6 02 00 64 00 .t...l;K ...d. ipw3945: Error Reply type 0x00000000 cmd TX (0x1C) seq 0x0073 ser 0x00000000 ipw3945: Can't stop Rx DMA. ipw3945: Detected geography ABG (11 802.11bg channels, 9 802.11a channels) ipw3945: Microcode SW error detected. Restarting. ipw3945: Start IPW Error Log Dump: ipw3945: Status: 0x1C0041F0, Config: 00000102 count: 1 ipw3945: Desc Time asrtPC const ilink1 nmiPC Line ipw3945: SYSASSERT (#5) 0x874363CF 0x000006E6 0x000039C2 0x000002AC 0x00000000 3242 ipw3945: Start IPW Event Log Dump: count 256 type 0x00 ipw3945: 0x00000001 0x0000016d ipw3945: 0x00000001 0x008056e0 ipw3945: 0x00000001 0x008056fc ipw3945: 0x00000001 0x00000000 ipw3945: 0x00000001 0x00000177 ipw3945: 0x00000001 0x008056e0 ipw3945: 0x00000001 0x00805704 ipw3945: 0x00000001 0x00000000 00000000 03 0B 00 2D 80 00 00 24 00 00 00 15 0F 00 13 02 ...-...$ ........ 00000010 06 74 13 00 14 6C 3B 4B A6 02 00 64 00 .t...l;K ...d. ipw3945: Error Reply type 0x00000000 cmd TX (0x1C) seq 0x0071 ser 0x00000000 # Type of security (if any) you are using (e.g. WEP64, WEP128, WPA, WPA2, 802.1x, etc) WEP128 # Version of firmware initial 3945 release # Version of the ieee80211 module 1.1.12 # Proximity to the AP 3 - 30 ft
Fixed in 0.0.70 The problem was being caused by bluetooth co-existence in conjunction with Tx frame measurement. The fix disables BT priority on frames where Tx measurement is occurring (at most once every 3 seconds)
Eric, Can you retry 0.0.70? Does this problem still exist in your side?
I've been running 0.0.70 since it's release with no problems at all.
According to Comment #3, verify this bug on ipw3945-0.0.70.