Lenovo IdeaPad U400 (14", Intel Core i5 2450M, 2,5GHz, 4GB, 750GB, AMD HD6470, DVD)

Laptop 14.1 Inch, IdeaPad, Lenovo, Notebook

Lenovo IdeaPad U400 (14", Intel Core i5 2450M, 2,5GHz, 4GB, 750GB, AMD HD6470, DVD)
Linux compatibility:
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Price trend
Lenovo IdeaPad U400 
-
Minimum: $ 489.00 
Maximum: $ 900.00  
Updated: 04/04/2016 00:59

Review of Linux Compatibility

The Lenovo IdeaPad U400 can be used under Linux (e.g., Ubuntu 12.04 LTS), but some components like the touchpad need additional configuration.

Touchpad:

The touchpad of the IdeaPad U400 has only one button, which is allocated to the left mouse button by default. Therefore, a right mouse click is not possible by default. The package “synaptiks” can be used to configure the touchpad and allow to assign the two-finger-click to the right mouse click.

Grafic:

The notebook is equipped with an Intel chipset as well as with an ATI (Radeon HD 6400M) chipset:

Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller
Advanced Micro Devices [AMD] nee ATI Seymour [Radeon HD 6400M Series]

Depending on the performance needs the system can switch between both chipsets with the tool Switcheroo.

In order to deactivate the AMD chipsatz to reduce the power consumption and use the lower-powered Intel chipset insetad one has to modify the file

/etc/rc.local

and change the last line

exit 0

into

echo ON > /sys/kernel/debug/vgaswitcheroo/switch
echo IGD > /sys/kernel/debug/vgaswitcheroo/switch
echo OFF > /sys/kernel/debug/vgaswitcheroo/switch
exit 0

Sound:

The following sound chipset is used in the IdeaPad U400, which is fully supported by Linux:

00:1b.0 Audio device: Intel Corporation 6 Series/C200 Series Chipset Family High Definition Audio Controller

The included microphone is supported at least since Linux kernel version 3.5.

WiFi:

The embedded 802.11n Intel chipset

03:00.0 Network controller: Intel Corporation Centrino Wireless-N 1030 (rev 34)

is fully supported by the kernel module iwl6030.

Overview

The Lenovo IdeaPad U400 houses the following hardware components:

00:00.0 Host bridge: Intel Corporation 2nd Generation Core Processor Family DRAM Controller (rev 09)
00:01.0 PCI bridge: Intel Corporation Xeon E3-1200/2nd Generation Core Processor Family PCI Express Root Port (rev 09)
00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller (rev 09)
00:16.0 Communication controller: Intel Corporation 6 Series/C200 Series Chipset Family MEI Controller #1 (rev 04)
00:19.0 Ethernet controller: Intel Corporation 82579V Gigabit Network Connection (rev 05)
00:1a.0 USB controller: Intel Corporation 6 Series/C200 Series Chipset Family USB Enhanced Host Controller #2 (rev 05)
00:1b.0 Audio device: Intel Corporation 6 Series/C200 Series Chipset Family High Definition Audio Controller (rev 05)
00:1c.0 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 1 (rev b5)
00:1c.1 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 2 (rev b5)
00:1c.4 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 5 (rev b5)
00:1d.0 USB controller: Intel Corporation 6 Series/C200 Series Chipset Family USB Enhanced Host Controller #1 (rev 05)
00:1f.0 ISA bridge: Intel Corporation HM65 Express Chipset Family LPC Controller (rev 05)
00:1f.2 SATA controller: Intel Corporation 6 Series/C200 Series Chipset Family 6 port SATA AHCI Controller (rev 05)
00:1f.3 SMBus: Intel Corporation 6 Series/C200 Series Chipset Family SMBus Controller (rev 05)
01:00.0 VGA compatible controller: Advanced Micro Devices [AMD] nee ATI Seymour [Radeon HD 6400M Series]
03:00.0 Network controller: Intel Corporation Centrino Wireless-N 1030 (rev 34)
04:00.0 USB controller: NEC Corporation uPD720200 USB 3.0 Host Controller (rev 04)

CPU:

Depending on the version of the U400 different types of CPUs are used: Intel i3 2350M or Intel i5 2450M (2.5 GHz, 4989 Bogomips). The 2350M has the following properties:

processor       : 0 (..3 identisch)
vendor_id       : GenuineIntel
cpu family      : 6
model           : 42
model name      : Intel(R) Core(TM) i5-2450M CPU @ 2.50GHz
stepping        : 7
microcode       : 0x1b
cpu MHz         : 800.000
cache size      : 3072 KB
physical id     : 0
siblings        : 4
cpu cores       : 2
apicid          : 0
initial apicid  : 0
fpu             : yes
fpu_exception   : yes
cpuid level     : 13
wp              : yes
flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca
                  cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht
                  tm pbe syscall nx rdtscp lm constant_tsc arch_perfmon pebs
                  bts nopl xtopology nonstop_tsc aperfmperf pni pclmulqdq
                  dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm pcid
                  sse4_1 sse4_2 x2apic popcnt tsc_deadline_timer aes xsave
                  avx lahf_lm ida arat epb xsaveopt pln pts dtherm tpr_shadow
                  vnmi flexpriority ept vpid
bogomips        : 4988.97
clflush size    : 64
cache_alignment : 64
address sizes   : 36 bits physical, 48 bits virtual

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Comments

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