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ASUS VivoBook K451LB

Introduction

This model is actually very similar to the VivoBook S451LB - in fact, the Windows reports the laptop as an S451LB, and even the BIOS updates released for it are identical to those for the S451LB.
In spite of these similarities, I have opened this new page to allow those who are less informed about the two models' similarities to quickly spot it at a glance.
Interestingly enough, this model is not listed on Asus' web site, although it is listed in its support site and printed brochures (marketed as an Ultrabook, despite not actually having the Ultrabook sticker).

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Specifications

Note: Since this model is extremely similar to the VivoBook S451LB, the following link should serve as a suitable reference for the hardware specifications.
For full specifications, please see the ASUS VivoBook S451LB specifications page.

NameASUS VivoBook K451LB-WX109H
ProcessorIntel Core i5-4200U Processor @ 0.798 - 1.60 ↔ 2.30/2.60 GHz, 0.6658 - 0.8934V
Screen14.0“ 16:9 HD (1366×768) Glare (glossy) panel
RAMUp to 8 GB DDR3L-1600 (4 GB soldered onboard)
HDD*500 GB + 8 GB 5400 RPM SSHD (Seagate Laptop Thin SSHD ST500LM000-1EJ162)
Optical DriveHL-DT-ST DVDRAM GU71N
Graphics (IGP)Intel HD Graphics 4400 (Haswell-ULT GT2) @ 599 - 1000 MHz
Graphics (Dedicated GPU)nVIDIA GeForce GT 740M (GK208M) 2 GB 980/1032/1600 MHz Core/Boost/Effective VRAM (Optimus)
AudioRealtek ALC233 HD Audio, single input/output jack controlled by software drivers
NetworkRealtek RTL8168/8111 PCI-E Gigabit Ethernet Adapter
Intel Dual Band Wireless-N 7260 BGN 2×2 HMC WiFi and Bluetooth 4.0 Adapter (WiDi-compatible)
USB2x USB 3.0, 1x USB 2.0
Battery46.4 Wh
Legacy CSM boot (BIOS Emulation)Supported

*Note: Because I was unwilling to fiddle with the partitions on the default HDD, I swapped it out for a Samsung SSD 840 EVO 250 GB (MZ-7TE250). It is important to note that only 2.5” disk drives of height 7 mm will be accepted - installing a 9 mm drive will prevent the cover from being closed properly.

Linux Compatibility

Linux Mint 17 MATE Edition (3.13.0-24-generic kernel, UEFI)

DeviceCompatibilityComments
Processor
Screen
HDD
GraphicsIGP: ✔
Optimus: ✔
Optimus support requires blacklisting of nouveau and installation of at least nVIDIA 331.38 drivers and Bumblebee. There is no BIOS option to disable the dedicated GPU.
HDMI OutBoth video and audio outputs are functional. Port is driven by the Intel IGP. Color saturation appears to be weak, possibly due to limited RGB mode being set in software?
DisplayPortN/AInbuilt screen is driven by embedded DisplayPort. No external DisplayPort interface.
Optical DriveReading: ✔
Writing: Not Tested
Sound (Inbuilt speakers)
Microphone (Inbuilt)
Headphone Port
Microphone-In PortNot Tested
EthernetPort takes a long time (~5 minutes) to initialize, but once it is up speeds are normal.
Wireless
BluetoothA2DP: ✔
File transfer: ✔ (for supported file types)
Others: Not Tested
Requires installation of gnome-bluetooth and use of bluetooth-wizard. There does not appear to be a way to disable the hardware since the wireless toggle key is not functional. Install blueman to manage Bluetooth connectivity. The wireless LED indicator and actual hardware states are swapped such that turning off the hardware through Blueman causes it to light up and vice versa.
USBUSB 2.0: ✔
USB 3.0: ✔
FirewireN/ANo Firewire port.
Card Reader
WebcamNot Tested
KeyboardWireless toggle and brightness keys do not work.
TouchPad
Suspend/Resume
Temperature SensorsnVIDIA GPU temperature needs to be checked in the nVIDIA X Server Settings panel.
Battery Life (Idle)~9 hours 30 minutesDischarge rate: 4.7 W
Capacity (Usable): 45.8 Wh

Notes

  • Dual booting both Windows 8 and Linux Mint 17 with Secure Boot enabled is possible, but it may be necessary to disable it temporarily when installing Linux Mint 17 (assuming Windows 8 is installed first).
  • UEFI mandates that the boot disk be partitioned in GPT, so care should be taken to boot from the installation discs explicitly in UEFI mode to avoid inadvertently overwriting the GPT partitioning structure and corrupting all data on the disk. This can be done by holding down the Escape key when booting up and selecting the UEFI:-prefixed entry corresponding to the optical drive.
  • When installing Linux Mint 17, the installer may not notice the presence of the Windows 8 install. Select the Something else option and proceed to create a custom partitioning layout.
  • If performing a UEFI install, ensure that the bootloader is installed to the disk itself (i.e. /dev/sda <disk name>) and not any sub partitions (e.g. /dev/sda1). This is because UEFI mandates that all bootloaders be installed to the same EFI partition on disk. Once installed, the laptop will boot to the Grub 2 bootloader instead, with an entry for booting into Windows 8 (only tested on Linux Mint 17, use of this method on anything else is solely at your own risk. Test it out with a virtual machine first to be on the safe side).
  • The wireless toggle and brightness function keys do not work in Linux, so any adjustments will need to be made through the relevant power settings and networking panels.
  • At the time of writing, nouveau does not support the GK208M GPU. This means that to restore functionality, the nVIDIA 331.38 drivers must be installed through the repository (or driver-manager) first, followed by Bumblebee (otherwise Bumblebee would trigger the release 304.xx drivers to be installed instead, which don't support the GK208M). Once installed, ensure that the Intel GPU is selected in the PRIME Profiles tab in NVIDIA X Server Settings - Bumblebee will enable the nVIDIA GPU as necessary.
  • It is possible to migrate a Windows 8 activation over to another install on a different disk provided that: 1) the rest of the hardware remains unchanged and 2) the Windows 8.1 update has not been installed (since the activation tool does not support it). Link to activation backup and restore tool
  • Oracle VirtualBox may report an error about VT-x not being enabled upon starting any guest machines and the Acceleration tab may be disabled despite virtualization being reported as enabled by other tools. If this is the case, disable secure boot and try again. Once the guest machines are starting properly, secure boot may be re-enabled.

Summary

With the exception of some quirks and minor functionality loss, the VivoBook K451LB works reasonably well with Linux Mint 17 MATE (3.13.0-24-generic kernel) in UEFI mode.


Discussion

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asus_vivobook_k451lb.txt · Last modified: 2014/06/14 15:10 by 175.156.182.51
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