kernel-packages team mailing list archive

[Roland Weber <r-o-l@xxxxxx>]

The cause of the freeze seems to be a BIOS problem, as Alan suggested on
the linux-usb mailing list. When booting in UEFI mode (from a Xubuntu
15.04 installation medium), three of the devices listed by lspci are
missing, compared to legacy BIOS mode. One of those is the device that
caused the freezes. Looks like some of the hardware is unused, and Acer
just hides it from the OS. But only in UEFI mode.

I'll try a re-installation of Xubuntu in UEFI mode.

** Attachment added: "output of lspci when booting in UEFI mode (insecure)"
   https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1485057/+attachment/4474853/+files/lspci-uefi.txt

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https://bugs.launchpad.net/bugs/1485057

Title:
  "lsusb -v" as root freezes the kernel on Acer ES1-111; also freeze on
  shutdown

Status in linux package in Ubuntu:
  Triaged

Bug description:
  reproducible: always

  Steps to reproduce:
  - open a terminal
  - sudo bash
  - lsusb -v

  In a virtual terminal, the command prints the name of the first device
  it finds, then the system freezes completely. In a terminal of the
  desktop, I don't even get the name of the device, the system freezes
  immediately. Either way, I have to power off the machine. There is no
  kernel oops. Nothing is written to the log. The magic sysreq key
  yields no response, although I have verified that it works before
  triggering the freeze.

  I've narrowed down the problem by calling "lsusb -v -s <device>". The
  system freezes on both devices of bus 3 (003:001 and 003:002). For all
  other devices, it prints the expected output and continues to work.
  When calling lsusb as a regular user, I get "Couldn't open device,
  some information will be missing", then the regular output, and the
  system keeps running. Therefore I assume that the problem is somewhere
  in the kernel, when the devices are accessed.

  This is a regression. It used to work in 14.10, and fails to work since 15.04.
  It also used to work in 14.04.2, and fails in 14.04.3.
  It fails with mainline builds 4.2.0-rc6-unstable, 4.2.0-rc2-unstable, 4.1.0-rc2-vivid. (yeah, I've been trying for a while :-)

  Incidentally, the shutdown sequence also freezes with the kernels that
  exhibit the problem; but I cannot be sure that the cause is the same.
  I decided to first chase the USB freeze, because it was easier to
  gather information about that.

  ProblemType: Bug
  DistroRelease: Ubuntu 15.04
  Package: linux-image-3.19.0-25-generic 3.19.0-25.26
  ProcVersionSignature: Ubuntu 3.19.0-25.26-generic 3.19.8-ckt2
  Uname: Linux 3.19.0-25-generic x86_64
  ApportVersion: 2.17.2-0ubuntu1.2
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  rweber     1525 F.... pulseaudio
  CurrentDesktop: XFCE
  Date: Fri Aug 14 18:38:36 2015
  HibernationDevice: RESUME=UUID=8a45266d-0232-428e-bb25-113d23caaf8a
  InstallationDate: Installed on 2015-06-28 (46 days ago)
  InstallationMedia: Xubuntu 14.10 "Utopic Unicorn" - Release amd64 (20141022.1)
  MachineType: Acer Aspire ES1-111M
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.19.0-25-generic root=UUID=b8872e03-7295-4cbd-ac86-06b9be2f112f ro quiet splash crashkernel=384M-:128M vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-3.19.0-25-generic N/A
   linux-backports-modules-3.19.0-25-generic  N/A
   linux-firmware                             1.143.3
  SourcePackage: linux
  UpgradeStatus: Upgraded to vivid on 2015-07-05 (39 days ago)
  dmi.bios.date: 08/20/2014
  dmi.bios.vendor: Insyde Corp.
  dmi.bios.version: V1.08
  dmi.board.asset.tag: Type2 - Board Asset Tag
  dmi.board.name: R2
  dmi.board.vendor: Acer
  dmi.board.version: Type2 - A01 Board Version
  dmi.chassis.type: 10
  dmi.chassis.vendor: Chassis Manufacturer
  dmi.chassis.version: Chassis Version
  dmi.modalias: dmi:bvnInsydeCorp.:bvrV1.08:bd08/20/2014:svnAcer:pnAspireES1-111M:pvrV1.08:rvnAcer:rnR2:rvrType2-A01BoardVersion:cvnChassisManufacturer:ct10:cvrChassisVersion:
  dmi.product.name: Aspire ES1-111M
  dmi.product.version: V1.08
  dmi.sys.vendor: Acer

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