Hi Christopher, 1) I tried removing iwlwifi and iwlmvm and then suspending. In both kernel 4.20.3 and 5.0.0-rc2 the result was the same.
I tried just leaving the system to run *without suspending*, and I found that the system would lock up after a few minutes anyway. The memory steadily increased (but nowhere near full) and the system load hit 5 (out of 4 CPUs). In both cases jbd2 was consuming 100% CPU at the time it locked up. I would normally think this was a disk issue in this case but I can't replicate it on Ubuntu kernel 4.18 (and I use this machine all day every day) so I don't think the issue is faulty hardware. 2) On a short suspend/resume cycle (before the system locked up) I resumed and reenabled the module. This time Network Manager appeared to connect, however the system locked up very shortly after that. I think there is a deeper issue here. Perhaps with jbd2 or kworker. -- 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/1472832 Title: Suspend issue with Dell Venue 11 Pro 7140 Status in linux package in Ubuntu: Incomplete Bug description: Instead of suspending the machine into a state where it can be started quickly, it appears that suspend causes the system to end up in a state which requires a forced start. The power light is off, and the only way to start the machine again is to hold down the power button for more than 5 seconds. A quick check of uptime shows that it did, indeed, start again. I'm attaching a suspend log. ProblemType: Bug DistroRelease: Ubuntu 15.04 Package: linux-image-generic (not installed) ProcVersionSignature: Ubuntu 3.19.0-22.22-generic 3.19.8-ckt1 Uname: Linux 3.19.0-22-generic x86_64 ApportVersion: 2.17.2-0ubuntu1.1 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: tudor 1785 F.... pulseaudio CurrentDesktop: Unity Date: Thu Jul 9 10:57:38 2015 HibernationDevice: RESUME=UUID=3acb1340-1be5-453c-a918-25f6b6ff404e InstallationDate: Installed on 2015-07-06 (2 days ago) InstallationMedia: Ubuntu 14.04.2 LTS "Trusty Tahr" - Release amd64 (20150218.1) Lsusb: Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 001 Device 004: ID 8087:0a2a Intel Corp. Bus 001 Device 003: ID 114d:1002 Alpha Imaging Technology Corp. Bus 001 Device 002: ID 0bda:5757 Realtek Semiconductor Corp. Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub MachineType: Dell Inc. Venue 11 Pro 7140 ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.19.0-22-generic root=UUID=f0dc97e1-7d1c-4d05-a7d8-3cfc8551bdc4 ro quiet splash i915.i915_enable_rc6=1 "acpi_osi=!Windows 2013" vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-3.19.0-22-generic N/A linux-backports-modules-3.19.0-22-generic N/A linux-firmware 1.143.1 SourcePackage: linux UpgradeStatus: Upgraded to vivid on 2015-07-07 (1 days ago) dmi.bios.date: 06/30/2015 dmi.bios.vendor: Dell Inc. dmi.bios.version: A07 dmi.board.vendor: Dell Inc. dmi.chassis.type: 8 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvrA07:bd06/30/2015:svnDellInc.:pnVenue11Pro7140:pvr01:rvnDellInc.:rn:rvr:cvnDellInc.:ct8:cvr: dmi.product.name: Venue 11 Pro 7140 dmi.product.version: 01 dmi.sys.vendor: Dell Inc. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1472832/+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