Lenovo T61 laptop running openSUSE 12.1 with KDE
Here’s the output on the intel 4965 chipset from lspci
03:00.0 Network controller: Intel Corporation PRO/Wireless 4965 AG or AGN [Kedron] Network Connection (rev 61)
My problem is the iwl4965 driver doesn’t perform well. Out of the box iwl4965 works, but it is unusable. It’s “slow” and “hangs”. Reading around has confused me as to what driver options I have. Three driver names I come across are iwl4965, iwlagn, and iwlwifi. I compiled compat wireless to see if that would help, but no. Actually, compat wireless disabled my use of iwl4965 and put a “preference” on iwlagn. The odd bit is that there is no driver named iwlagn under the updates directory, but there is under the kernel directory, which is what gets loaded. The problem with iwlagn is that I haven’t been able to get it to work.
There’s a program named iwl-load that toggles between iwlagn and iwl4965. To effectively switch back to using iwl4965 I had to find the module under the updates directory, remove the .ignore ending, and then run “iwl-load iwl4965”. If I didn’t rename the iwl4965 module under updates before running iwl-load I would then need to run “depmod -a”. Then I could “modprobe iwl4965”.
Here’s the output from running “iwl-load iwlagn”
linux-mvg4:~ # iwl-load iwlagn Unloading ... 2 iwl4965 modules found we'll disable all of them Disabling iwl4965 (1) ...WARNING: -e needs -E or -F [ERROR] Module is still being detected: updates/drivers/net/wireless/iwlegacy/iwl4965.ko Disabling iwl4965 (2) ...WARNING: -e needs -E or -F [OK] Module disabled: updates/drivers/net/wireless/iwlegacy/iwl4965.ko Enabling iwlagn ...WARNING: -e needs -E or -F [OK] Module renamed but another module file is being preferred Renamed module: /lib/modules/3.1.0-1.2-desktop/kernel/drivers/net/wireless/iwlwifi/iwlagn.ko Preferred module: kernel/drivers/net/wireless/iwlwifi/iwlagn.ko FATAL: Error inserting iwlagn (/lib/modules/3.1.0-1.2-desktop/kernel/drivers/net/wireless/iwlwifi/iwlagn.ko): Invalid argument iwlagn loaded successfully linux-mvg4:~ #
There’s lots of output in dmesg similar to the following
2600.115453] iwlagn: disagrees about version of symbol ieee80211_iter_keys 2600.115455] iwlagn: Unknown symbol ieee80211_iter_keys (err -22)
If I remove the wireless drivers and “modprobe iwlwifi” I get no errors, but I don’t have a wireless interface either. In dmesg I see the following
Jan 6 19:42:25 linux-mvg4 kernel: 6905.953349] cfg80211: Calling CRDA to update world regulatory domain Jan 6 19:42:25 linux-mvg4 kernel: 6905.962892] cfg80211: World regulatory domain updated: Jan 6 19:42:25 linux-mvg4 kernel: 6905.962897] cfg80211: (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp) Jan 6 19:42:25 linux-mvg4 kernel: 6905.962900] cfg80211: (2402000 KHz - 2472000 KHz @ 40000 KHz), (300 mBi, 2000 mBm) Jan 6 19:42:25 linux-mvg4 kernel: 6905.962903] cfg80211: (2457000 KHz - 2482000 KHz @ 20000 KHz), (300 mBi, 2000 mBm) Jan 6 19:42:25 linux-mvg4 kernel: 6905.962905] cfg80211: (2474000 KHz - 2494000 KHz @ 20000 KHz), (300 mBi, 2000 mBm) Jan 6 19:42:25 linux-mvg4 kernel: 6905.962908] cfg80211: (5170000 KHz - 5250000 KHz @ 40000 KHz), (300 mBi, 2000 mBm) Jan 6 19:42:25 linux-mvg4 kernel: 6905.962911] cfg80211: (5735000 KHz - 5835000 KHz @ 40000 KHz), (300 mBi, 2000 mBm) Jan 6 19:42:25 linux-mvg4 kernel: 6905.991360] Intel(R) Wireless WiFi Link AGN driver for Linux, in-tree:d Jan 6 19:42:25 linux-mvg4 kernel: 6905.991363] Copyright(c) 2003-2011 Intel Corporation
I’m stuck on what to do next. Maybe the performance of iwl4965 can be tweaked? What steps do I take to get iwlagn to work? And what about iwlwifi? Does anyone have experience with intel wireless chipsets who can help me on this? Instead of plugging in a usb wlan adapter I would rather try getting this one to work. I also have a t60 laptop with an intel 3945 chipset. That one works well with the iwl3945 driver. How odd.