Christopher, my understanding is that a bisect can't be done based on this paragraph in the original report.
"This is complicated by the fact that the newer firmware requires kernel 3.19 and kernel 3.19 requires the iwlwifi-7265D*.ucode firmware instead of the old iwlwifi-7265*.ucode firmware, so it's not possible to mix/match older/newer kernel/firmware combinations, nor do a kernel bisect." I'll be glad to try to do what you need, but I'd need a link to some directions. I'm not familiar with that procedure. -- 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/1437913 Title: 8086:095b [Lenovo ThinkPad X250] Wifi unstable on vivid with Intel 7265 Status in The Linux Kernel: Unknown Status in linux package in Ubuntu: Triaged Bug description: After upgrading from utopic to vivid beta, wifi on the Intel 7265 on my Thinkpad X250 has become unstable (linux-image 3.19.0-10.10, linux-firmware 1.143): 03:00.0 Network controller [0280]: Intel Corporation Wireless 7265 [8086:095b] (rev 59) Subsystem: Intel Corporation Dual Band Wireless-AC 7265 [8086:5210] I'm seeing two primary problems: * On 5GHz 802.11ac, I'll get DEAUTH_LEAVING almost exactly every minute, followed by an immediate reconnect. * On both 2.4GHz and 5GHz, all network activity will cease after 10-20 minutes. A manual reconnect will temporarily fix network activity. This is complicated by the fact that the newer firmware requires kernel 3.19 and kernel 3.19 requires the iwlwifi-7265D*.ucode firmware instead of the old iwlwifi-7265*.ucode firmware, so it's not possible to mix/match older/newer kernel/firmware combinations, nor do a kernel bisect. FAOD, the latest utopic kernel/firmware combination (linux-image 3.16.0-33.44, linux-firmware 1.138.1) works fine, which I can use in vivid if I manually install them. I have tested ~kernel-ppa/mainline 3.19.3-031903.201503261036 and 4.0.0-040000rc5.201503230035, which exhibit the same problems. WORKAROUND: iw reg set US ProblemType: Bug DistroRelease: Ubuntu 15.04 Package: linux-image-3.19.0-10-generic 3.19.0-10.10 ProcVersionSignature: Ubuntu 3.19.0-10.10-generic 3.19.2 Uname: Linux 3.19.0-10-generic x86_64 ApportVersion: 2.16.2-0ubuntu5 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: ryan 1862 F.... pulseaudio /dev/snd/controlC1: ryan 1862 F.... pulseaudio CurrentDesktop: Unity Date: Sun Mar 29 11:42:13 2015 HibernationDevice: RESUME=UUID=c21a0227-27e2-4c4f-8bd9-30793932acbc InstallationDate: Installed on 2015-03-07 (22 days ago) InstallationMedia: Ubuntu 14.10 "Utopic Unicorn" - Release amd64 (20141022.1) MachineType: LENOVO 20CMCTO1WW ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.19.0-10-generic root=/dev/mapper/ubuntu--vg-root ro acpi_osi=Linux acpi_backlight=vendor psmouse.proto=imps quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-3.19.0-10-generic N/A linux-backports-modules-3.19.0-10-generic N/A linux-firmware 1.143 SourcePackage: linux UpgradeStatus: Upgraded to vivid on 2015-03-29 (0 days ago) dmi.bios.date: 01/23/2015 dmi.bios.vendor: LENOVO dmi.bios.version: N10ET28W (1.05 ) dmi.board.asset.tag: Not Available dmi.board.name: 20CMCTO1WW dmi.board.vendor: LENOVO dmi.board.version: SDK0E50512 STD dmi.chassis.asset.tag: No Asset Information dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: None dmi.modalias: dmi:bvnLENOVO:bvrN10ET28W(1.05):bd01/23/2015:svnLENOVO:pn20CMCTO1WW:pvrThinkPadX250:rvnLENOVO:rn20CMCTO1WW:rvrSDK0E50512STD:cvnLENOVO:ct10:cvrNone: dmi.product.name: 20CMCTO1WW dmi.product.version: ThinkPad X250 dmi.sys.vendor: LENOVO To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/1437913/+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
