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[Bug 1354598] Re: No video on touchscreen -- Dell Venue Pro 11 7130


** Attachment added: "/var/log/udev from booting 3.16.0-6"

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  No video on touchscreen -- Dell Venue Pro 11 7130

Status in “linux” package in Ubuntu:

Bug description:
  Apologies if I shouldn't file a bug on this -- I've seen that it is
  already fixed in (at least) the most recent Utopic kernel. But I can't
  actually use that kernel either, due to a regression (I guess that
  will be a separate report). Consider this a suggestion to backport the
  fix for this to Trusty.

  When booting the current Trusty kernel, there is no video on the
  touchscreen. HDMI output works, and even without HDMI connected X is
  running fine (as evidenced by connecting through x11vnc). And either
  alternative output method shows that the touchscreen is working fine
  as an INPUT device. But no picture.

  Attaching two udev logs, one from booting 3.13.0-32, the other from
  3.16.0-6. You can see that in the 3.16 log, quite a few more devices
  under /devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A08:00/INT33C3:00/ are
  discovered compared to the 3.13 -- I'm assuming one of those is the
  video, since that's where the touchscreen-as-input lives.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: linux-image-3.13.0-32-generic 3.13.0-32.57 [modified: boot/vmlinuz-3.13.0-32-generic]
  ProcVersionSignature: Ubuntu 3.13.0-32.57-generic
  Uname: Linux 3.13.0-32-generic x86_64
  ApportVersion: 2.14.1-0ubuntu3.3
  Architecture: amd64
  AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/by-path', '/dev/snd/controlC1', '/dev/snd/hwC1D0', '/dev/snd/pcmC1D0c', '/dev/snd/pcmC1D0p', '/dev/snd/controlC0', '/dev/snd/hwC0D0', '/dev/snd/pcmC0D3p', '/dev/snd/pcmC0D7p', '/dev/snd/pcmC0D8p', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1:
  Date: Fri Aug  8 17:22:12 2014
  EcryptfsInUse: Yes
  InstallationDate: Installed on 2014-08-08 (0 days ago)
  InstallationMedia: Kubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2)
   Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
   Bus 001 Device 004: ID 114d:1000 Alpha Imaging Technology Corp. 
   Bus 001 Device 003: ID 0bda:5751 Realtek Semiconductor Corp. 
   Bus 001 Device 002: ID 1b75:9170 Ovislink Corp. AirLive X.USB 802.11abgn [Atheros AR9170+AR9104]
   Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
  MachineType: Dell Inc. Venue 11 Pro 7130 MS
   PATH=(custom, no user)
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: \vmlinuz-3.13.0-32-generic ro root=UUID=d1f725f9-24f1-45b0-8a83-6761da8071d8  quiet splash  initrd=\initrd.img-3.13.0-32-generic
  PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No PulseAudio daemon running, or not running as session daemon.
   linux-restricted-modules-3.13.0-32-generic N/A
   linux-backports-modules-3.13.0-32-generic  N/A
   linux-firmware                             1.132
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 06/20/2014
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: A12
  dmi.board.name: 057KTY
  dmi.board.vendor: Dell Inc.
  dmi.board.version: A01
  dmi.chassis.type: 9
  dmi.chassis.vendor: Dell Inc.
  dmi.modalias: dmi:bvnDellInc.:bvrA12:bd06/20/2014:svnDellInc.:pnVenue11Pro7130MS:pvr01:rvnDellInc.:rn057KTY:rvrA01:cvnDellInc.:ct9:cvr:
  dmi.product.name: Venue 11 Pro 7130 MS
  dmi.product.version: 01
  dmi.sys.vendor: Dell Inc.

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