Still happens with: 4.4.0-040400rc8-generic from the mainline PPA (there is a non RC 4.4 there, but it's older than RC8 so I used that instead).
These errors are reported now: > [ 11.924171] usb 2-3: device not accepting address 2, error -62 > [ 16.832609] usb 1-3: device descriptor read/64, error -110 Also, I worked out how to reliably reproduce the related issues - the long pause at boot, the errors above, and suspend immediately resuming if wakeups from XHCI are not disabled: Just do a cold boot, i.e. from power on. Warm boot show none of these symptoms. -- 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/1507472 Title: XHCI controller causing MacbookPro12,1 to resume immediately after suspend Status in linux package in Ubuntu: Incomplete Bug description: On my MacbookPro12,1 with Wily and Linux 4.2, by default the kernel successfully suspends but then immediately resumes again. The problem seems to be the XHCI controller causing spurious ACPI wakeups. Also, the Broadcom wifi module seems to have problems with suspend/resume, so I am also unloading the `brcmfmac` module prior to suspend and loading it again after resume. WORKAROUND: Disable XHC1 prior to sleeping: > # echo XHC1 > /proc/acpi/wakeup ProblemType: Bug DistroRelease: Ubuntu 15.10 Package: linux-image-4.2.0-16-generic 4.2.0-16.19 ProcVersionSignature: Ubuntu 4.2.0-16.19-generic 4.2.3 Uname: Linux 4.2.0-16-generic x86_64 ApportVersion: 2.19.1-0ubuntu2 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC1: mjg 1441 F.... pulseaudio /dev/snd/controlC0: mjg 1441 F.... pulseaudio CurrentDesktop: GNOME Date: Mon Oct 19 18:13:15 2015 HibernationDevice: RESUME=UUID=bc879a1f-ac27-48ae-82dd-3c81b7307dd0 InstallationDate: Installed on 2015-07-22 (89 days ago) InstallationMedia: Ubuntu-GNOME 15.04 "Vivid Vervet" - Release amd64 (20150422) Lsusb: Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 001 Device 003: ID 05ac:0273 Apple, Inc. Bus 001 Device 002: ID 05ac:8290 Apple, Inc. Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub MachineType: Apple Inc. MacBookPro12,1 ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.2.0-16-generic root=/dev/mapper/ubuntu--gnome--vg-root ro quiet splash acpi_backlight=vendor vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-4.2.0-16-generic N/A linux-backports-modules-4.2.0-16-generic N/A linux-firmware 1.149 RfKill: 3: phy0: Wireless LAN Soft blocked: no Hard blocked: no SourcePackage: linux UdevLog: Error: [Errno 2] No such file or directory: '/var/log/udev' UpgradeStatus: Upgraded to wily on 2015-08-27 (52 days ago) dmi.bios.date: 06/05/2015 dmi.bios.vendor: Apple Inc. dmi.bios.version: MBP121.88Z.0167.B07.1506051617 dmi.board.name: Mac-E43C1C25D4880AD6 dmi.board.vendor: Apple Inc. dmi.board.version: MacBookPro12,1 dmi.chassis.type: 9 dmi.chassis.vendor: Apple Inc. dmi.chassis.version: Mac-E43C1C25D4880AD6 dmi.modalias: dmi:bvnAppleInc.:bvrMBP121.88Z.0167.B07.1506051617:bd06/05/2015:svnAppleInc.:pnMacBookPro12,1:pvr1.0:rvnAppleInc.:rnMac-E43C1C25D4880AD6:rvrMacBookPro12,1:cvnAppleInc.:ct9:cvrMac-E43C1C25D4880AD6: dmi.product.name: MacBookPro12,1 dmi.product.version: 1.0 dmi.sys.vendor: Apple Inc. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1507472/+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