Hello Fumihito Thanks for looking into this.
Meanwhile I have installed the officially released 64bit version of Ubuntu. Things are strange. After a fresh installation and a reboot WLAN did not work at all (except for discovery/scanning). There were error messages regarding the firmware. I googled and found this to be quite similar: https://bugzilla.redhat.com/show_bug.cgi?id=519154 Subsequently, echo options iwlagn swcrypto=1 >> /etc/modprobe.d/options restored WLAN functionallity, but the transfer rate was still too slow! Max. 1 MB/s with pauses if big files are transferred. Then I removed "options iwlagn swcrypto=1" from "options" to reproduce the original error messages for you but after the reboot WLAN worked unexpectedly and was much faster - ca. 3.8 MB/s. Weirdly, the screen resolution had also changed from native 1280x800 to 1024x768. Now, yet another reboot and the screen resolution is fine and WLAN works fine too (without "options iwlagn swcrypto=1"). So things seem to be resolved for now. If things start failing again. I will certainly report it. Here some more information on my machine: Hardware name: HP EliteBook 6930p uname -a Linux 2.6.32-21-generic #32-Ubuntu SMP Fri Apr 16 08:09:38 UTC 2010 x86_64 GNU/Linux dpkg -l |grep 2.6.32 ii linux-generic 2.6.32.21.22 Complete Generic Linux kernel ii linux-headers-2.6.32-21 2.6.32-21.32 Header files related to Linux kernel version ii linux-headers-2.6.32-21-generic 2.6.32-21.32 Linux kernel headers for version 2.6.32 on x ii linux-headers-generic 2.6.32.21.22 Generic Linux kernel headers ii linux-image-2.6.32-21-generic 2.6.32-21.32 Linux kernel image for version 2.6.32 on x86 ii linux-image-generic 2.6.32.21.22 Generic Linux kernel image ii linux-libc-dev 2.6.32-21.32 Linux Kernel Headers for development With "echo options iwlagn swcrypto=1 >> /etc/modprobe.d/options", I still get this: May 2 16:35:57 owl kernel: [ 212.342687] WARNING: at /build/buildd/linux-2.6.32/net/mac80211/agg-tx.c:150 ___ieee80211_stop_tx_ba_session+0x82/0x90 [mac80211]() May 2 16:35:57 owl kernel: [ 212.342694] Hardware name: HP EliteBook 6930p May 2 16:35:57 owl kernel: [ 212.342698] Modules linked in: cryptd aes_x86_64 aes_generic binfmt_misc snd_hda_codec_analog snd_hda_intel snd_hda_codec snd_hwdep snd_pcm_oss snd_mixer_oss snd_pcm snd_seq_dummy fbcon tileblit font bitblit softcursor snd_seq_oss vga16fb vgastate snd_seq_midi pata_pcmcia snd_rawmidi snd_seq_midi_event snd_seq snd_timer snd_seq_device arc4 pcmcia snd yenta_socket i915 drm_kms_helper iwlagn soundcore sdhci_pci drm ricoh_mmc rsrc_nonstatic iwlcore pcmcia_core snd_page_alloc sdhci i2c_algo_bit intel_agp mac80211 psmouse tpm_infineon tpm tpm_bios cfg80211 serio_raw joydev video output hp_accel lis3lv02d input_polldev ppdev led_class parport_pc lp parport ohci1394 ieee1394 ahci e1000e May 2 16:35:57 owl kernel: [ 212.342817] Pid: 9, comm: events/0 Not tainted 2.6.32-21-generic #32-Ubuntu May 2 16:35:57 owl kernel: [ 212.342823] Call Trace: May 2 16:35:57 owl kernel: [ 212.342842] [<ffffffff81066d0b>] warn_slowpath_common+0x7b/0xc0 May 2 16:35:57 owl kernel: [ 212.342851] [<ffffffff81066d64>] warn_slowpath_null+0x14/0x20 May 2 16:35:57 owl kernel: [ 212.342872] [<ffffffffa0138902>] ___ieee80211_stop_tx_ba_session+0x82/0x90 [mac80211] May 2 16:35:57 owl kernel: [ 212.342893] [<ffffffffa0138a9f>] __ieee80211_stop_tx_ba_session+0x7f/0x90 [mac80211] May 2 16:35:57 owl kernel: [ 212.342914] [<ffffffffa0138247>] ieee80211_sta_tear_down_BA_sessions+0x27/0x50 [mac80211] May 2 16:35:57 owl kernel: [ 212.342937] [<ffffffffa013cde9>] ieee80211_set_disassoc+0x109/0x220 [mac80211] May 2 16:35:57 owl kernel: [ 212.342945] [<ffffffff8105e962>] ? enqueue_entity+0x122/0x1a0 May 2 16:35:57 owl kernel: [ 212.342967] [<ffffffffa013d1c1>] ieee80211_mgd_deauth+0x111/0x120 [mac80211] May 2 16:35:57 owl kernel: [ 212.342992] [<ffffffffa01427de>] ieee80211_deauth+0x1e/0x20 [mac80211] May 2 16:35:57 owl kernel: [ 212.343016] [<ffffffffa00e4f4e>] __cfg80211_mlme_deauth+0xee/0x130 [cfg80211] May 2 16:35:57 owl kernel: [ 212.343026] [<ffffffff8105b086>] ? try_to_wake_up+0x286/0x380 May 2 16:35:57 owl kernel: [ 212.343048] [<ffffffffa00e8709>] __cfg80211_disconnect+0x159/0x1d0 [cfg80211] May 2 16:35:57 owl kernel: [ 212.343066] [<ffffffffa00d425f>] cfg80211_netdev_notifier_call+0x10f/0x450 [cfg80211] May 2 16:35:57 owl kernel: [ 212.343080] [<ffffffff81543ae6>] notifier_call_chain+0x56/0x80 May 2 16:35:57 owl kernel: [ 212.343093] [<ffffffff8108a366>] raw_notifier_call_chain+0x16/0x20 May 2 16:35:57 owl kernel: [ 212.343104] [<ffffffff8145db1b>] call_netdevice_notifiers+0x1b/0x20 May 2 16:35:57 owl kernel: [ 212.343112] [<ffffffff8145e505>] dev_close+0x55/0xb0 May 2 16:35:57 owl kernel: [ 212.343128] [<ffffffffa00d49f9>] cfg80211_rfkill_set_block+0x69/0xa0 [cfg80211] May 2 16:35:57 owl kernel: [ 212.343145] [<ffffffffa00d4a30>] ? cfg80211_rfkill_sync_work+0x0/0x30 [cfg80211] May 2 16:35:57 owl kernel: [ 212.343161] [<ffffffffa00d4a56>] cfg80211_rfkill_sync_work+0x26/0x30 [cfg80211] May 2 16:35:57 owl kernel: [ 212.343172] [<ffffffff81080777>] run_workqueue+0xc7/0x1a0 May 2 16:35:57 owl kernel: [ 212.343180] [<ffffffff810808f3>] worker_thread+0xa3/0x110 May 2 16:35:57 owl kernel: [ 212.343189] [<ffffffff81085320>] ? autoremove_wake_function+0x0/0x40 May 2 16:35:57 owl kernel: [ 212.343198] [<ffffffff81080850>] ? worker_thread+0x0/0x110 May 2 16:35:57 owl kernel: [ 212.343205] [<ffffffff81084fa6>] kthread+0x96/0xa0 May 2 16:35:57 owl kernel: [ 212.343215] [<ffffffff810141ea>] child_rip+0xa/0x20 May 2 16:35:57 owl kernel: [ 212.343222] [<ffffffff81084f10>] ? kthread+0x0/0xa0 May 2 16:35:57 owl kernel: [ 212.343229] [<ffffffff810141e0>] ? child_rip+0x0/0x20 May 2 16:35:57 owl kernel: [ 212.343235] ---[ end trace 07476c460d699488 ]--- May 2 16:36:34 owl kernel: [ 248.631098] e1000e: eth0 NIC Link is Up 100 Mbps Full Duplex, Flow Control: RX/TX May 2 16:36:34 owl kernel: [ 248.631106] 0000:00:19.0: eth0: 10/100 speed: disabling TSO May 2 16:36:34 owl kernel: [ 248.632393] ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready May 2 16:41:56 owl kernel: [ 570.760421] e1000e: eth0 NIC Link is Down May 2 16:41:58 owl kernel: [ 572.985894] iwlagn 0000:02:00.0: RF_KILL bit toggled to enable radio. May 2 16:41:58 owl kernel: [ 573.217558] Registered led device: iwl-phy0::radio May 2 16:41:58 owl kernel: [ 573.217606] Registered led device: iwl-phy0::assoc May 2 16:41:58 owl kernel: [ 573.217651] Registered led device: iwl-phy0::RX May 2 16:41:58 owl kernel: [ 573.217694] Registered led device: iwl-phy0::TX May 2 16:41:58 owl kernel: [ 573.272164] ADDRCONF(NETDEV_UP): wlan0: link is not ready May 2 16:42:10 owl kernel: [ 584.741193] ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready May 2 16:42:37 owl kernel: [ 612.011405] iwlagn 0000:02:00.0: iwl_tx_agg_start on ra = 00:24:fe:41:89:e5 tid = 0 May 2 16:42:38 owl kernel: [ 612.927439] Registered led device: iwl-phy0::radio May 2 16:42:38 owl kernel: [ 612.927948] Registered led device: iwl-phy0::assoc May 2 16:42:38 owl kernel: [ 612.928417] Registered led device: iwl-phy0::RX May 2 16:42:38 owl kernel: [ 612.928883] Registered led device: iwl-phy0::TX May 2 16:47:45 owl kernel: [ 919.551043] e1000e: eth0 NIC Link is Up 100 Mbps Full Duplex, Flow Control: RX/TX May 2 16:47:45 owl kernel: [ 919.551052] 0000:00:19.0: eth0: 10/100 speed: disabling TSO May 2 16:48:01 owl pulseaudio[1577]: ratelimit.c: 3 events suppressed May 2 16:59:59 owl kernel: [ 1654.196249] iwlagn 0000:02:00.0: Stopping AGG while state not ON or starting ============================================================================================ On Thu, Apr 29, 2010 at 3:40 PM, Fumihito YOSHIDA <h...@kugutsu.org> wrote: > Hi, I test with my EliteBook 6930P on 10.04, and wireless ether is > works fine. > > Could you please re-test with 10.04? > And if this problem still there, please tell us your 6930P > hardware-configuration. > > My 6930p is: > - Hardware P/N: FL490AW#ACF > - It works with iwlagn with: (from lspci) > | 02:00.0 Network controller: Intel Corporation Wireless WiFi Link 5300 > > $ dpkg -S > /lib/modules/2.6.32-21-generic/kernel/drivers/net/wireless/iwlwifi/iwlagn.ko > linux-image-2.6.32-21-generic: > /lib/modules/2.6.32-21-generic/kernel/drivers/net/wireless/iwlwifi/iwlagn.ko > > $ dpkg -l |grep 2.6.32-21 > ii linux-headers-2.6.32-21 2.6.32-21.32 > Header files related to Linux kernel version > ii linux-headers-2.6.32-21-generic 2.6.32-21.32 > Linux kernel headers for version 2.6.32 on x > ii linux-image-2.6.32-21-generic 2.6.32-21.32 > Linux kernel image for version 2.6.32 on x86 > ii linux-libc-dev 2.6.32-21.32 > Linux Kernel Headers for development > > -- > Wireless flaky EliteBook 6930p HP Notebook > https://bugs.launchpad.net/bugs/542821 > You received this bug notification because you are a direct subscriber > of the bug. > > Status in Ubuntu: New > > Bug description: > Wireless had been flaky with Karmic (2-3 MB/s with interruptions, sometimes > slows down). Now in 10.04 the wireless is still flaky but (connection losses) > and much slower. The maximum data rate now is between 100-300 kb/s. So it > actually got worse after upgrading. > > I assume this is a kernel driver issue. > > To unsubscribe from this bug, go to: > https://bugs.launchpad.net/ubuntu/+bug/542821/+subscribe > -- Wireless flaky EliteBook 6930p HP Notebook https://bugs.launchpad.net/bugs/542821 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs