<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 TRANSITIONAL//EN"> <HTML> <HEAD> <META HTTP-EQUIV="Content-Type" CONTENT="text/html; CHARSET=UTF-8"> <META NAME="GENERATOR" CONTENT="GtkHTML/3.16.3"> </HEAD> <BODY> I apologize in advance for what promises to be a lengthy post. Suggest heavy editing in any replies. Since installing F11 on my Thinkpad W700 I've had a chronic problem with the wireless disconnecting after a random time interval. It was rock solid with F10. I've noticed a number of kernel errors in my e-mail logs. The most prolific example was yesterday: <BLOCKQUOTE> <PRE> ---------------------- Kernel Begin ----------------------- WARNING: Kernel Errors Present iwlagn: Error sending REPLY_SC ...: 1 Time(s) iwlagn: Error sending REPLY_TX ...: 5 Time(s) iwlagn: Error sending Sensitiv ...: 1 Time(s) iwlagn: Microcode SW error detected. Resta ...: 19 Time(s) ---------------------- Kernel End ------------------------- </PRE> </BLOCKQUOTE> I just now updated to the 2.6.29.6-217.2.7 kernel. --changelog says John Linville patched iwlwifi in the 217.2.5 kernel on Wednesday to fix a TX queue race. I pulled my eth0 cable, reset the NetworkManager wireless connection, and started a ping to my default gateway. The wifi connection lasted 11 pings, so John's patch didn't fix this problem. When the ping stopped I saw the following in /var/log/messages: <BLOCKQUOTE> <PRE> <TT>Aug 16 15:57:10 tiger kernel: iwlagn: Microcode SW error detected. Restarting 0x82000000.</TT> <TT>Aug 16 15:57:10 tiger kernel: iwlagn: No space for Tx</TT> <TT>Aug 16 15:57:10 tiger kernel: iwlagn: Error sending SENSITIVITY_CMD failed</TT> <TT>Aug 16 15:57:10 tiger kernel: iwlagn: SENSITIVITY_CMD failed: -28</TT> <TT>Aug 16 15:57:10 tiger kernel: Registered led device: iwl-phy0:radio</TT> <TT>Aug 16 15:57:10 tiger kernel: Registered led device; iwl-phy0:assoc</TT> <TT>Aug 16 15:57:10 tiger kernel: Registered led device: iwl-phy0:RX</TT> <TT>Aug 16 15:57:10 tiger kernel: Registered led device: iwl-phy0:TX</TT> </PRE> </BLOCKQUOTE> When I click on the NetworkManager button to reset the wireless connection /var/log/messages reports a very chatty but normal looking restart: <BLOCKQUOTE> <PRE> Aug 16 16:03:46 tiger NetworkManager: <info> (wlan0): device state change: 8 -> 3 (reason 0) Aug 16 16:03:46 tiger NetworkManager: <info> (wlan0): deactivating device (reason: 0) Aug 16 16:03:46 tiger NetworkManager: <WARN> check_one_route(): (wlan0) error - 34 returned from rtnl_route_del(): Success#012 Aug 16 16:03:46 tiger avahi-daemon[1901]: Leaving mDNS multicast group on interface wlan0.IPv4 with address 192.168.1.7. Aug 16 16:03:46 tiger avahi-daemon[1901]: Interface wlan0.IPv4 no longer relevan for mDNS. Aug 16 16:03:46 tiger NetworkManager: <info> Activation (wlan0) starting connection 'Auto <SSID>' Aug 16 16:03:46 tiger NetworkManager: <info> (wlan0): device state change: 3 -> 4 (reason 0) Aug 16 16:03:46 tiger NetworkManager: <info> Activation (wlan0) Stage 1 of 5 (Device Prepare) scheduled... Aug 16 16:03:46 tiger NetworkManager: <info> Activation (wlan0) Stage 1 of 5 (Device Prepare) started... Aug 16 16:03:46 tiger NetworkManager: <info> Activation (wlan0) Stage 2 of 5 (Device Configure) scheduled... Aug 16 16:03:46 tiger NetworkManager: <info> Activation (wlan0) Stage 1 of 5 (Device Prepare) complete. Aug 16 16:03:46 tiger NetworkManager: <info> (wlan0): supplicant connection state: completed -> disconnected Aug 16 16:03:46 tiger NetworkManager: <info> Activation (wlan0) Stage 2 of 5 (Device Configure) starting... Aug 16 16:03:46 tiger NetworkManager: <info> (wlan0): device state change: 4 -> 5 (reason 0) Aug 16 16:03:46 tiger NetworkManager: <info> Activation (wlan0/wireless): connection 'Auto <SSID>' requires no security. No secrets needed. Aug 16 16:03:46 tiger NetworkManager: <info> Config: added 'ssid' value '<SSID>' Aug 16 16:03:46 tiger NetworkManager: <info> Config: added 'scan_ssid' value '1' Aug 16 16:03:46 tiger NetworkManager: <info> Config: added 'key_mgmt' valuen 'NONE' Aug 16 16:03:46 tiger NetworkManager: <info> Activation (wlan0) Stage 2 of 5 (Device Configure) complete. Aug 16 16:03:46 tiger NetworkManager: <info> Config: set interface ap_scan to 1 Aug 16 16:03:46 tiger NetworkManager: <info> (wlan0: supplicant connection state: disconnected -> scanning Aug 16 16:03:48 tiger ntpd[2263]: Deleting interface #10 wlan0, 192.168.1.7#123, interface stats: received=2, sent=18, dropped-0, active_time=664 secs Aug 16 16:03:49 tiger NetworkManager: <info> (wlan0): supplicant connection state: scanning -> associating Aug 16 16:03:49 tiger NetworkManager: <info> (wlan0): supplicant connection state: associating -> associated Aug 16 16:03:49 tiger NetworkManager: <info> (wlan0): supplicant connection state: associated -> completed Aug 16 16:03:49 tiger NetworkManager: <info> Activation (wlan0/wireless) Stage 2 of 5 (Device Configure) successful. Connected to wireless network '<SSID>'. Aug 16 16:03:49 tiger NetworkManager: <info> Activation (wlan0) Stage 3 of 5 (IP Configure Start) scheduled. Aug 16 16:03:49 tiger NetworkManager: <info> Activation (wlan0) Stage 3 of 5 (IP Configure Start) started... Aug 16 16:03:49 tiger NetworkManager: <info> (wlan0): device state change: 5 -> 7 (reason 0) Aug 16 16:03:49 tiger NetworkManager: <info> Activation (wlan0) Beginning DHCP transaction. Aug 16 16:03:49 tiger NetworkManager: <info> dhclient started with pid 4089 Aug 16 16:03:49 tiger NetworkManager: <info>Activation (wlan0) Stage 3 of 5 (IP Configure Start) complete. Aug 16 16:03:49 tiger dhclient: Internet Systems Consortium DHCP Client 4.1.0 Aug 16 16:03:49 tiger dhclient: Copyright 2004-2008 Internet Systems Consortium. Aug 16 16:03:49 tiger dhclient: All rights reserved. Aug 16 16:03:49 tiger dhclient: For info, please visit <A HREF="http://www.isc.org/sw.dhcp/">http://www.isc.org/sw.dhcp/</A> Aug 16 16:03:49 tiger dhclient: Aug 16 16:03:49 tiger NetworkManager: <info> DHCP: device wlan state changed normal exit -> preinit Aug 16 16:03:49 tiger dhclient: Listening on LPF/wlan0/<MAC> Aug 16 16:03:49 tiger dhclient: Sending on LPF/wlan0/<MAC> Aug 16 16:03:49 tiger dhclient: Sending on Socket/fallback Aug 16 16:03:50 tiger dhclient: DHCPREQUEST on wlan0 to 255.255.255.255 port 67 Aug 16 16:03:53 tiger dhclient: DHCPREQUEST on wlan0 to 255.255.255.255 port 67 Aug 16 16:03:53 tiger dhclient: DHCPACK from 192.168.1.2 Aug 16 16:03:53 tiger NetworkManager: <info> DHCP: device wlan0 state changed preinit -> reboot Aug 16 16:03:53 tiger NetworkManager: <info> Activation (wlan0) Stage 4 of 5 (IP configure Get) scheduled... Aug 16 16:03:53 tiger NetworkManager: <info> Activation (wlan0) Stage 4 of 5 (IP Configure Get) started... Aug 16 16:03:53 tiger NetworkManager: <info> address 192.168.1.7 Aug 16 16:03:53 tiger NetworkManager: <info> prefix 24 (255.255.255.0) Aug 16 16:03:53 tiger NetworkManager: <info> gateway 192.168.1.1 Aug 16 16:03:53 tiger NetworkManager: <info> nameserver 'xxx.xxx.xxx.xxx' Aug 16 16:03:53 tiger NetworkManager: <info> nameserver 'yyy.yyy.yyy.yyy' Aug 16 16:03:53 tiger NetworkManager: <info> nameserver 'zzz.zzz.zzz.zzz' Aug 16 16:03:53 tiger NetworkManager: <info> domain name '<privatedomainname>' Aug 16 16:03:53 tiger NetworkManager: <info> Activation (wlan0) Stage 5 of 5 (IP Configure Commit) scheduled... Aug 16 16:03:53 tiger NetworkManager: <info> Activation (wlan0) Stage 4 of 5 (IP Configure Get) complete. Aug 16 16:03:53 tiger NetworkManager: <info> Activation (wlan0) Stage 5 of 5 (IP Configure Commit) started... Aug 16 16:03:53 tiger avahi-daemon[1901]: Joining mDNS multicast group on interface wlan0.IPv4 with 192.168.1.7. Aug 16 16:03:53 tiger avahi-daemon[1901]: Registering new address record for 192.168.1.7 on wlan0.IPv4. Aug 16 16:03:53 tiger dhclient: bound to 192.168.1.7 -- renewal in 2727 seconds. Aug 16 16:03:54 tiger NetworkManager: <info> (wlan0): device state change: 7 -> 8 (reason 0) Aug 16 16:03:54 tiger NetworkManager: <info> Policy set 'Auto <SSID>' (wlan0) as default for routing and DNS. Aug 16 16:03:54 tiger NetworkManager: <info> Activation (wlan0) successful, device activated. Aug 16 16:03:54 tiger NetworkManager: <info> Activation (wlan0) Stage 5 of 5 (IP Configure Commit) complete. Aug 16 16:03:54 tiger ntpd02263]: Listening on interface #11 wlan0, 192.168.1.7#123 Enabled </PRE> </BLOCKQUOTE> About a half hour later the connection failed with the same log entries: <BLOCKQUOTE> <PRE> Aug 16 16:45:25 tiger kernel: iwlagn: Microcode SW error detected. Restarting 0x82000000. Aug 16 16:45:25 tiger kernel: iwlagn: No space for Tx Aug 16 16:45:25 tiger kernel: iwlagn: Error sending Sensitivity_CMD: enqueue_hcmd failed: -28 Aug 16 16:45:25 tiger kernel: iwlagn: SENSITIVITY_CMD failed Aug 16 16:45:25 tiger kernel: Registered led device: iwl-phy0:radio Aug 16 16:45:25 tiger kernel: Registered led device: iwl-phy0:assoc Aug 16 16:45:25 tiger kernel: Registered led device: iwl-phy0:RX Aug 16 16:45:25 tiger kernel: Registered led device: iwl-phy0:TX </PRE> </BLOCKQUOTE> Has anyone else running seen this misbehavior on a W700 running F11? --Doc Savage Fairview Heights, IL </BODY> </HTML>