kernel-packages team mailing list archive

[Joseph Salisbury <joseph.salisbury@xxxxxxxxxxxxx>]

I'd like to perform a reverse bisect to figure out which commit upstream
fixes this regression. It would be very helpful to know the last kernel
that had this issue and the first kernel that did not.

Can you test the following kernels and report back? We are looking for
the earliest kernel version that doesn't have this bug:

v3.16: http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.16-utopic

If v3.16 exhibits the bug then test v3.17-rc5:
v3.17-rc5: http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.17-rc5-utopic/

If v3.16 does not exhibit the bug then test v3.15:
v3.15: http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.15-utopic/

You don't have to test every kernel, just up until the first kernel that
does not have this bug.

Thanks in advance!

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https://bugs.launchpad.net/bugs/1359997

Title:
  Touchpad of HP Chromebook 14 no longer works with latest kernel

Status in “linux” package in Ubuntu:
  Confirmed

Bug description:
  After the recent upgrade to the 3.13.0-34 kernel the touchpad on the
  HP Chromebook 14 with Ubuntu 14.04 installed via chrubuntu no longer
  works. By booting up with the previous version of the kernel which is
  3.13.0-32, the touch pad works fine.

  $ lsb_release -rd
  Description:	Ubuntu 14.04.1 LTS
  Release:	14.04

  With version 3.13.0-32 lshw returns the following for the serial ports:
          *-serial:0
               description: Serial bus controller
               product: Lynx Point-LP I2C Controller #0
               vendor: Intel Corporation
               physical id: 15.1
               bus info: pci@0000:00:15.1
               version: 04
               width: 32 bits
               clock: 33MHz
               capabilities: pm bus_master cap_list
               configuration: driver=i2c-designware-pci latency=0
               resources: irq:21 memory:e051a000-e051afff memory:e051b000-e051bfff
          *-serial:1
               description: Serial bus controller
               product: Lynx Point-LP I2C Controller #1
               vendor: Intel Corporation
               physical id: 15.2
               bus info: pci@0000:00:15.2
               version: 04
               width: 32 bits
               clock: 33MHz
               capabilities: pm bus_master cap_list
               configuration: driver=i2c-designware-pci latency=0
               resources: irq:21 memory:e051c000-e051cfff memory:e051d000-e051dfff

  whereas with 3.13.0-34 it returns:
          *-serial:0 UNCLAIMED
               description: Serial bus controller
               product: Lynx Point-LP I2C Controller #0
               vendor: Intel Corporation
               physical id: 15.1
               bus info: pci@0000:00:15.1
               version: 04
               width: 32 bits
               clock: 33MHz
               capabilities: pm bus_master cap_list
               configuration: latency=0
               resources: memory:e051a000-e051afff memory:e051b000-e051bfff
          *-serial:1 UNCLAIMED
               description: Serial bus controller
               product: Lynx Point-LP I2C Controller #1
               vendor: Intel Corporation
               physical id: 15.2
               bus info: pci@0000:00:15.2
               version: 04
               width: 32 bits
               clock: 33MHz
               capabilities: pm bus_master cap_list
               configuration: latency=0
               resources: memory:e051c000-e051cfff memory:e051d000-e051dfff
  --- 
  ApportVersion: 2.14.1-0ubuntu3.3
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC1:  odysseas   1667 F.... pulseaudio
   /dev/snd/controlC0:  odysseas   1667 F.... pulseaudio
  DistroRelease: Ubuntu 14.04
  MachineType: Hewlett-Packard Falco
  Package: linux (not installed)
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   SHELL=/bin/bash
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-34-generic root=UUID=da0a2ba1-af5e-4893-9a16-bec85f4d2a2f ro quiet splash=verbose
  ProcVersionSignature: Ubuntu 3.13.0-34.60-generic 3.13.11.4
  PulseList:
   Error: command ['pacmd', 'list'] failed with exit code 1: Home directory not accessible: Permission denied
   No PulseAudio daemon running, or not running as session daemon.
  RelatedPackageVersions:
   linux-restricted-modules-3.13.0-34-generic N/A
   linux-backports-modules-3.13.0-34-generic  N/A
   linux-firmware                             1.127.5
  Tags:  trusty
  Uname: Linux 3.13.0-34-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups:
   
  _MarkForUpload: True
  dmi.bios.date: 10/18/2013
  dmi.bios.vendor: coreboot
  dmi.chassis.type: 3
  dmi.chassis.vendor: Hewlett-Packard
  dmi.modalias: dmi:bvncoreboot:bvr:bd10/18/2013:svnHewlett-Packard:pnFalco:pvr1.0:cvnHewlett-Packard:ct3:cvr:
  dmi.product.name: Falco
  dmi.product.version: 1.0
  dmi.sys.vendor: Hewlett-Packard

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