Hi Chis Chiu, I had a similar issue here with all kernels after 5.8.0-63-generic. I found this bug report and just finished trying your suggestion I'm pleased to tell you that at least in my Dell notebook it worked. The as previously reported the issue only happens after login into the X env.
If I can provide any extra detail please let me know. Kind regards. -- 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/1939347 Title: Ubuntu 20.04 freeze since kernel 5.11 Status in linux package in Ubuntu: Confirmed Bug description: Since the last kernel update 5.11.0-25-generic, the system freezes in a few seconds or minutes, sometimes even on the login screen. The machine is a recent dell latitude 7490. The graphics card is Intel Corporation UHD Graphics 620 (rev 07). No multiboot. No problem with the previous kernel 5.8.0-63. I had the same problem with fedora a few months ago, which forced me to switch to ubuntu without any problems so far. Thanks for your help. --- ProblemType: Bug ApportVersion: 2.20.11-0ubuntu27.18 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: plawrence 1996 F.... pulseaudio CasperMD5CheckResult: skip CurrentDesktop: ubuntu:GNOME DistroRelease: Ubuntu 20.04 InstallationDate: Installed on 2020-06-21 (414 days ago) InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423) Lsusb: Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 001 Device 003: ID 8087:0a2b Intel Corp. Bus 001 Device 002: ID 1bcf:2b96 Sunplus Innovation Technology Inc. Integrated_Webcam_HD Bus 001 Device 004: ID 0a5c:5834 Broadcom Corp. 5880 Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub MachineType: Dell Inc. Latitude 7490 Package: linux (not installed) ProcEnviron: TERM=xterm-256color PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=fr_FR.UTF-8 SHELL=/bin/bash ProcFB: 0 i915drmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.11.0-25-generic root=UUID=01fd281b-07d7-45f2-846b-d5b79ed5d431 ro quiet splash vt.handoff=7 ProcVersionSignature: Ubuntu 5.11.0-25.27~20.04.1-generic 5.11.22 RelatedPackageVersions: linux-restricted-modules-5.11.0-25-generic N/A linux-backports-modules-5.11.0-25-generic N/A linux-firmware 1.187.15 Tags: focal Uname: Linux 5.11.0-25-generic x86_64 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm cdrom dip lpadmin lxd plugdev sambashare sudo _MarkForUpload: True dmi.bios.date: 02/23/2021 dmi.bios.release: 1.19 dmi.bios.vendor: Dell Inc. dmi.bios.version: 1.19.0 dmi.board.name: 0KP0FT dmi.board.vendor: Dell Inc. dmi.board.version: A00 dmi.chassis.type: 10 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvr1.19.0:bd02/23/2021:br1.19:svnDellInc.:pnLatitude7490:pvr:rvnDellInc.:rn0KP0FT:rvrA00:cvnDellInc.:ct10:cvr: dmi.product.family: Latitude dmi.product.name: Latitude 7490 dmi.product.sku: 081C dmi.sys.vendor: Dell Inc. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1939347/+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
