Re: [Bug 2161098] Re: Random hard freezes caused by i915 kernel page fault in eb_relocate_parse_slow on MacBookAir6,2 (Intel HD 5000)acBookAir6,2 (Intel HD 5000)

Hi Alice, Thank you very much for providing the patched kernel and for your work on this issue. I tested it as instructed, installing only the two packages you mentioned: * |linux-image-unsigned-6.8.0-139-generic| * |linux-modules-6.8.0-139-generic| I did not add the Canonical kernel team PPA or make any other configuration changes. Unfortunately, the result of the test was not usable. After booting into |6.8.0-139-generic|, Ubuntu reached the normal graphical desktop, and the GNOME clock continued running, so the system itself did not appear to be completely frozen. However: * the built-in keyboard was completely unresponsive; * the built-in trackpad was completely unresponsive; * my Bluetooth mouse was also completely unresponsive; * the Wi-Fi/network indicator was missing, and Wi-Fi appeared to be unavailable; * the only physical control that continued to respond was the power button. I therefore had to perform a forced shutdown. I then booted back into my existing |6.8.0-138-generic| kernel, and everything immediately worked normally again, including the keyboard, trackpad and Bluetooth mouse. For reference, on 138 my DKMS status is: |broadcom-sta/6.30.223.271, 6.8.0-138-generic, x86_64: installed| |facetimehd/0.7.0.1, 6.8.0-138-generic, x86_64: installed| So there is a clear difference between the two kernels: 138 is fully functional on this MacBook, whereas 139 boots to the desktop but loses several hardware functions. I have now removed 139 and returned to 138 so that I don't have to keep performing forced shutdowns. I hope this information is useful. Please let me know if there are any specific logs or additional tests you would like me to perform on 138 or, if necessary, on another test build. I'm happy to help with testing so we can narrow down the original i915 issue. Thanks again for taking the time to build and provide the patched kernel. Regards, Khaled On 21/08/2026 18:41, Alice C. Munduruca wrote: > It'll take at least a day to build due to backlogged builders. If you > are a bit impatient and would like to build a kernel yourself from > source you can follow [1] and just apply the patch above to the correct > file. > > Regardless, let me know what your testing shows so that we can get this > patch upstream for v7.3 :) > > [1]:https://ubuntu.com/kernel/docs/how-to/develop-customise/build- > kernel/ > -- You received this bug notification because you are subscribed to linux in Ubuntu. Matching subscriptions: Bgg, Bmail, Nb https://bugs.launchpad.net/bugs/2161098 Title: Random hard freezes caused by i915 kernel page fault in eb_relocate_parse_slow on MacBookAir6,2 (Intel HD 5000)acBookAir6,2 (Intel HD 5000) Status in linux package in Ubuntu: In Progress Bug description: Hardware: - Apple MacBookAir6,2 - Intel Haswell HD Graphics 5000 (i915) Software: - Ubuntu 26.10 - Mesa 26.0.3 - Kernel 7.0.0-27 and 7.0.0-28 affected - Currently testing kernel 7.0.0-14 Problem: The system randomly hard freezes. The display remains unchanged with no graphical corruption, but the keyboard and mouse become completely unresponsive and only a hard power-off recovers the system. The freezes are not tied to any particular application. One crash happened while running Papers, but other freezes have occurred during normal desktop use. The previous boot journal contains the following kernel oops: BUG: unable to handle page fault Call trace: kfree() eb_relocate_parse_slow [i915] i915_gem_do_execbuffer [i915] i915_gem_execbuffer2_ioctl [i915] The same MacBook Air hardware is completely stable under macOS (including Big Sur), suggesting this is a Linux kernel regression rather than a hardware fault. The issue has occurred multiple times on kernels 7.0.0-27 and 7.0.0-28. I am now testing kernel 7.0.0-14 to determine whether the regression was introduced after that version. ProblemType: Bug DistroRelease: Ubuntu 26.04 Package: linux-image-7.0.0-14-generic 7.0.0-14.14 ProcVersionSignature: Ubuntu 7.0.0-14.14-generic 7.0.0 Uname: Linux 7.0.0-14-generic x86_64 NonfreeKernelModules: wl ApportVersion: 2.34.0-0ubuntu2 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC1: khaled 2072 F.... wireplumber /dev/snd/controlC0: khaled 2072 F.... wireplumber /dev/snd/seq: khaled 2048 F.... pipewire CasperMD5CheckResult: pass CurrentDesktop: ubuntu:GNOME Date: Fri Jul 17 16:19:07 2026 InstallationDate: Installed on 2026-07-14 (3 days ago) InstallationMedia: Ubuntu 26.04 "Resolute Raccoon" - Release amd64 (20260423.1) IwDevWlp3s0Link: Error: command ['iw', 'dev', 'wlp3s0', 'link'] failed with exit code 255: command failed: Operation not permitted (-1) Connected to <hidden-mac> (on wlp3s0) SSID: <hidden> freq: 5280.0 MachineType: Apple Inc. MacBookAir6,2 ProcEnviron: LANG=en_US.UTF-8 PATH=(custom, user) SHELL=/bin/bash TERM=xterm-256color XDG_RUNTIME_DIR=<set> ProcFB: 0 i915drmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-7.0.0-14-generic root=UUID=b8679823-0d43-482e-99df-035663cbd8cf ro quiet splash crashkernel=2G-4G:320M,4G-32G:512M,32G-64G:1024M,64G-128G:2048M,128G-:4096M SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 01/13/2023 dmi.bios.release: 0.1 dmi.bios.vendor: Apple Inc. dmi.bios.version: 478.0.0.0.0 dmi.board.asset.tag: Base Board Asset Tag# dmi.board.name: Mac-7DF21CB3ED6977E5 dmi.board.vendor: Apple Inc. dmi.board.version: MacBookAir6,2 dmi.chassis.type: 10 dmi.chassis.vendor: Apple Inc. dmi.chassis.version: Mac-7DF21CB3ED6977E5 dmi.modalias: dmi:bvnAppleInc.:bvr478.0.0.0.0:bd01/13/2023:br0.1:svnAppleInc.:pnMacBookAir6,2:pvr1.0:rvnAppleInc.:rnMac-7DF21CB3ED6977E5:rvrMacBookAir6,2:cvnAppleInc.:ct10:cvrMac-7DF21CB3ED6977E5:skuSystemSKU#:pfaMacBookAir: dmi.product.family: MacBook Air dmi.product.name: MacBookAir6,2 dmi.product.sku: System SKU# dmi.product.version: 1.0 dmi.sys.vendor: Apple Inc. 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