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[Black <daltonfury42@xxxxxxxxx>]

Well, I've updated the BIOS, but it does not change anything. For
updating, I swapped my SSH with an old HDD with the OEM Windows. But
still the result is the same, the value of USB charge is 1, and can't be
changed. Here is the output you  asked for:

sudo dmidecode -s bios-version && sudo dmidecode -s bios-release-date
R0230DA
02/24/2015


** Changed in: linux (Ubuntu)
       Status: Incomplete => Confirmed

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https://bugs.launchpad.net/bugs/1461986

Title:
  can't change usb_charge attribute in /sys/devices/platform/sony-laptop

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  I am on a Sony VAIO svf43142sn. My laptop has the ability to leave a USB port powered on even after shutdown to charge other devices. The value of /sys/devices/platform/sony-laptop/usb_charge is 1, but the USB port is not powered on. Also when I tried toggling it to 0 it resets back to 1 when I check again using cat. So I restarted the module sony-laptop with debug flags on. When I try:
  echo -n 0 | sudo tee -a /sys/devices/platform/sony-laptop/usb_charge

  these are the curresponding kernel logs, implying that it was a success:
  [ 9121.879908] sony_laptop: found handle 0x0155 (offset: 0x07)
  [ 9121.881386] sony_laptop: __call_snc_method: [SN07:0x0000000000000107]
  [ 9121.881394] sony_laptop: called SN07 with 0x0107 (result: 0x0000)

  But if I cat the value of usb charge, the change is not reflected, and I see this when I dmesg:
  [ 9346.202318] sony_laptop: found handle 0x0155 (offset: 0x07)
  [ 9346.202489] sony_laptop: __call_snc_method: [SN07:0x0000000000000007]
  [ 9346.202494] sony_laptop: called SN07 with 0x0007 (result: 0x0001)

  If it matters, when i simply echo 1, I will get this:
  [ 9879.675844] sony_laptop: found handle 0x0155 (offset: 0x07)
  [ 9879.676878] sony_laptop: __call_snc_method: [SN07:0x0000000000010107]
  [ 9879.676885] sony_laptop: called SN07 with 0x10107 (result: 0x0000)

  The entire debug message when I restart the module(sony-laptop) is given here: http://paste.ubuntu.com/11551226/ . I have asked the same as a question on askubuntu.com. It has got a other information if you need it:
  http://askubuntu.com/questions/628542/how-to-leave-a-usb-port-powered-during-shutdown-for-charging-mobile

  ---
  ApportVersion: 2.14.1-0ubuntu3.11
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  dalton     1816 F.... pulseaudio
  CurrentDesktop: GNOME
  DistroRelease: Ubuntu 14.04
  HibernationDevice: RESUME=UUID=babf655a-816a-4c8a-ad03-6fe550cc1d60
  InstallationDate: Installed on 2015-05-28 (7 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
  MachineType: Sony Corporation SVF14212SNW
  NonfreeKernelModules: wl
  Package: linux (not installed)
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.16.0-38-generic root=UUID=d52d966a-2fa0-4050-821e-99176a8fc013 ro quiet splash vt.handoff=7
  ProcVersionSignature: Ubuntu 3.16.0-38.52~14.04.1-generic 3.16.7-ckt10
  RelatedPackageVersions:
   linux-restricted-modules-3.16.0-38-generic N/A
   linux-backports-modules-3.16.0-38-generic  N/A
   linux-firmware                             1.127.12
  Tags:  trusty
  Uname: Linux 3.16.0-38-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom dialout dip lpadmin plugdev sambashare sudo
  _MarkForUpload: True
  dmi.bios.date: 11/18/2013
  dmi.bios.vendor: Insyde Corp.
  dmi.bios.version: R0220DA
  dmi.board.asset.tag: N/A
  dmi.board.name: VAIO
  dmi.board.vendor: Sony Corporation
  dmi.board.version: N/A
  dmi.chassis.asset.tag: N/A
  dmi.chassis.type: 10
  dmi.chassis.vendor: Sony Corporation
  dmi.chassis.version: N/A
  dmi.modalias: dmi:bvnInsydeCorp.:bvrR0220DA:bd11/18/2013:svnSonyCorporation:pnSVF14212SNW:pvrC10JZ3LZ:rvnSonyCorporation:rnVAIO:rvrN/A:cvnSonyCorporation:ct10:cvrN/A:
  dmi.product.name: SVF14212SNW
  dmi.product.version: C10JZ3LZ
  dmi.sys.vendor: Sony Corporation

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