Ubuntu
linux package

  1. Bug #1114856
  2. Comment #0

Comment 0 for bug 1114856

Revision history for this message
Val (vk1266) wrote : power button not working when Samsung laptop is booted in CSM mode; works fine in EFI mode

When my Samsung NP700Z5C is booted in the CSM (BIOS compatibility) mode, pressing the power button has no effect. There is no scancode per "/lib/udev/keymap". However, when the same laptop is booted in the UEFI mode, the power button works perfectly fine.

The problem is quite annoying because if the laptop is accidentally sent to sleep or hibernate mode, there is no return back from sleep/hibernate. Pressing the power button has no effect. The laptop can be turned off by long-pressing the power button, with the collateral loss of all unsaved data.

ProblemType: Bug
DistroRelease: Ubuntu 12.10
Package: linux-image-3.5.0-23-generic 3.5.0-23.35
ProcVersionSignature: Ubuntu 3.5.0-23.35-generic 3.5.7.2
Uname: Linux 3.5.0-23-generic x86_64
ApportVersion: 2.6.1-0ubuntu10
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: val 2259 F.... pulseaudio
Date: Sun Feb 3 22:56:12 2013
HibernationDevice: RESUME=UUID=96bef07a-40d3-4067-8c9a-211548fc7184
InstallationDate: Installed on 2013-01-17 (17 days ago)
InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Release amd64 (20121017.5)
MachineType: SAMSUNG ELECTRONICS CO., LTD. 700Z3C/700Z5C
MarkForUpload: True
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.5.0-23-generic root=UUID=ef3ff468-e0b5-43db-ac4c-447c73805778 ro quiet splash acpi=noirq vt.handoff=7
RelatedPackageVersions:
 linux-restricted-modules-3.5.0-23-generic N/A
 linux-backports-modules-3.5.0-23-generic N/A
 linux-firmware 1.95
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 09/19/2012
dmi.bios.vendor: Phoenix Technologies Ltd.
dmi.bios.version: P04ABJ
dmi.board.asset.tag: Base Board Asset Tag
dmi.board.name: NP700Z5C-S03CA
dmi.board.vendor: SAMSUNG ELECTRONICS CO., LTD.
dmi.board.version: FAB1
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 9
dmi.chassis.vendor: SAMSUNG ELECTRONICS CO., LTD.
dmi.chassis.version: 0.1
dmi.modalias: dmi:bvnPhoenixTechnologiesLtd.:bvrP04ABJ:bd09/19/2012:svnSAMSUNGELECTRONICSCO.,LTD.:pn700Z3C/700Z5C:pvr0.1:rvnSAMSUNGELECTRONICSCO.,LTD.:rnNP700Z5C-S03CA:rvrFAB1:cvnSAMSUNGELECTRONICSCO.,LTD.:ct9:cvr0.1:
dmi.product.name: 700Z3C/700Z5C
dmi.product.version: 0.1
dmi.sys.vendor: SAMSUNG ELECTRONICS CO., LTD.