Ok, I swapped out my old Intel 3945abg card with a new intel 5300bgn wifi card. Reliability seems to have increased, but problem still occurs. See attached for dmesg output of dropout with new wifi card installed, including two instances of "wireless disabled by hardware switch."
It leads me to believe that the problem was at least partially hardware... I will test the new mainline kernel and report back... ** Attachment added: "dmesg output with recurrence after hardware swap" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1296504/+attachment/4429004/+files/dmesg.txt ** Summary changed: - iwl3945 wireless connection becomes unreliable + intel wireless connection becomes unreliable -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1296504 Title: intel wireless connection becomes unreliable Status in linux package in Ubuntu: Incomplete Bug description: what I expect: wireless connectivity to be reliable and consistent what happens instead: wireless connection cuts out, recovers, re-establishes connection. sometimes (rare) requires disabling / re-enabling via hardware or software switch. sometimes (more rare) hardware fails completely until reboot (removing and re-inserting module fails -- hardware disappears to the system until reboot). This problem will occur without a suspend / resume cycle. This problem appeared recently, within the last month or two months of kernel updates. I think the next step in debugging would be to test reliability against previous kernel versions. some relevant dmesg: keyboard: can't emulate rawmode for keycode 240 iwl3945 0000:0c:00.0: BSM uCode verification failed at addr 0x00003800+0 (of 900), is 0xffffffff, s/b 0xf802020 iwl3945 0000:0c:00.0: Unable to set up bootstrap uCode: -5 iwl3945 0000:0c:00.0: MAC is in deep sleep!. CSR_GP_CNTRL = 0xFFFFFFFF iwl3945 0000:0c:00.0: bad EEPROM signature,EEPROM_GP=0x00000007 iwl3945 0000:0c:00.0: EEPROM not found, EEPROM_GP=0xffffffff iwl3945 0000:0c:00.0: Unable to init EEPROM iwl3945 0000:0c:00.0: PCI INT A disabled iwl3945: probe of 0000:0c:00.0 failed with error -2 --- AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24. ApportVersion: 2.0.1-0ubuntu17.8 Architecture: i386 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: ethan 2078 F.... pulseaudio Card0.Amixer.info: Card hw:0 'Intel'/'HDA Intel at 0xf6dfc000 irq 48' Mixer name : 'Silicon Image SiI1392 HDMI' Components : 'HDA:83847616,1028020a,00100201 HDA:10951392,1028020a,00100000' Controls : 34 Simple ctrls : 20 DistroRelease: Ubuntu 12.04 HibernationDevice: RESUME=UUID=b57e427a-bc21-49e6-994b-a43aee47cec0 InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release i386 (20120423) MachineType: Dell Inc. XPS M1330 MarkForUpload: True Package: linux (not installed) ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-77-lowlatency-pae root=UUID=8e1188f1-2cff-41e9-8298-1d4b1983f24d ro quiet splash acpi_backlight=vendor dell_laptop.backlight=0 vt.handoff=7 ProcVersionSignature: Ubuntu 3.2.0-77.79-lowlatency-pae 3.2.66 RelatedPackageVersions: linux-restricted-modules-3.2.0-77-lowlatency-pae N/A linux-backports-modules-3.2.0-77-lowlatency-pae N/A linux-firmware 1.79.18 RfKill: 0: phy0: Wireless LAN Soft blocked: no Hard blocked: no Tags: precise running-unity Uname: Linux 3.2.0-77-lowlatency-pae i686 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm audio cdrom dip lpadmin plugdev sambashare sudo video dmi.bios.date: 12/26/2008 dmi.bios.vendor: Dell Inc. dmi.bios.version: A15 dmi.board.name: 0N6705 dmi.board.vendor: Dell Inc. dmi.chassis.type: 8 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvrA15:bd12/26/2008:svnDellInc.:pnXPSM1330:pvr:rvnDellInc.:rn0N6705:rvr:cvnDellInc.:ct8:cvr: dmi.product.name: XPS M1330 dmi.sys.vendor: Dell Inc. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1296504/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
