Почему так мало оперативной памяти видит хромбук?

Добрый день.
Приобрел хромбук Toshiba Chromebook 2 (2014) "Swanky" Model: CB35-B3340
На сайте производителя указаны такие характеристики:
  1. Processor: Intel Celeron N2840
  2. Operating System: Chrome OS
  3. Graphics engine: Intel HD Graphics
  4. Memory: 4GB DDR3 1600MHz
  5. Hard drive: 16GB solid state flash memory (eMMC)


Перепрошил биос, переустановил другую операционную систему.
Сейчас использую Elementary OS.
Инструкций в интернете полно.
Все работает, все устраивает, все шикарно.

Вопрос почему система видит всего 2 гига оперативки из 4?
Куда делись еще 2 гига?

veter9@chromebook:~$ cat /proc/meminfo
MemTotal:        1964540 kB
MemFree:          198020 kB
MemAvailable:     237668 kB
Buffers:            4888 kB
Cached:           544920 kB
SwapCached:        16416 kB
Active:          1171608 kB
Inactive:         442876 kB
Active(anon):    1081700 kB
Inactive(anon):   395880 kB
Active(file):      89908 kB
Inactive(file):    46996 kB
Unevictable:        1788 kB
Mlocked:            1788 kB
SwapTotal:       2010108 kB
SwapFree:        1540484 kB
Dirty:               332 kB
Writeback:             0 kB
AnonPages:       1064884 kB
Mapped:           293236 kB
Shmem:            412912 kB
Slab:              59232 kB
SReclaimable:      30736 kB
SUnreclaim:        28496 kB
KernelStack:        7952 kB
PageTables:        40308 kB
NFS_Unstable:          0 kB
Bounce:                0 kB
WritebackTmp:          0 kB
CommitLimit:     2992376 kB
Committed_AS:    6210144 kB
VmallocTotal:   34359738367 kB
VmallocUsed:      548864 kB
VmallocChunk:   34359123872 kB
HardwareCorrupted:     0 kB
AnonHugePages:    120832 kB
CmaTotal:              0 kB
CmaFree:               0 kB
HugePages_Total:       0
HugePages_Free:        0
HugePages_Rsvd:        0
HugePages_Surp:        0
Hugepagesize:       2048 kB
DirectMap4k:      152944 kB
DirectMap2M:     1859584 kB


veter9@chromebook:~$ cat /var/log/Xorg.0.log | grep -i driver
[    10.458] 	X.Org Video Driver: 19.0
[    10.458] 	X.Org XInput driver : 21.0
[    10.480] (==) Matched intel as autoconfigured driver 0
[    10.480] (==) Matched intel as autoconfigured driver 1
[    10.480] (==) Matched modesetting as autoconfigured driver 2
[    10.480] (==) Matched fbdev as autoconfigured driver 3
[    10.480] (==) Matched vesa as autoconfigured driver 4
[    10.480] (==) Assigned the driver to the xf86ConfigLayout
[    10.481] (II) Loading /usr/lib/xorg/modules/drivers/intel_drv.so
[    10.487] 	Module class: X.Org Video Driver
[    10.487] 	ABI class: X.Org Video Driver, version 19.0
[    10.487] (II) Loading /usr/lib/xorg/modules/drivers/modesetting_drv.so
[    10.488] 	Module class: X.Org Video Driver
[    10.488] 	ABI class: X.Org Video Driver, version 19.0
[    10.488] (II) Loading /usr/lib/xorg/modules/drivers/fbdev_drv.so
[    10.489] 	Module class: X.Org Video Driver
[    10.489] 	ABI class: X.Org Video Driver, version 19.0
[    10.489] (II) Loading /usr/lib/xorg/modules/drivers/vesa_drv.so
[    10.490] 	Module class: X.Org Video Driver
[    10.490] 	ABI class: X.Org Video Driver, version 19.0
[    10.490] (II) intel: Driver for Intel(R) Integrated Graphics Chipsets:
[    10.491] (II) intel: Driver for Intel(R) HD Graphics: 2000-6000
[    10.491] (II) intel: Driver for Intel(R) Iris(TM) Graphics: 5100, 6100
[    10.491] (II) intel: Driver for Intel(R) Iris(TM) Pro Graphics: 5200, 6200, P6300
[    10.491] (II) modesetting: Driver for Modesetting Kernel Drivers: kms
[    10.491] (II) FBDEV: driver for framebuffer: fbdev
[    10.491] (II) VESA: driver for VESA chipsets: vesa
[    10.493] (II) intel(0): Using Kernel Mode Setting driver: i915, version 1.6.0 20141121
[    10.497] 	ABI class: X.Org Video Driver, version 19.0
[    10.552] (II) intel(0): [DRI2]   DRI driver: i965
[    10.552] (II) intel(0): [DRI2]   VDPAU driver: i965
[    10.877] 	Module class: X.Org XInput Driver
[    10.877] 	ABI class: X.Org XInput driver, version 21.0
[    10.877] (II) Using input driver 'evdev' for 'Power Button'
[    10.879] (II) Using input driver 'evdev' for 'Power Button'
[    10.881] (II) No input driver specified, ignoring this device.
[    10.882] (II) Using input driver 'evdev' for 'Sleep Button'
[    10.883] (II) Using input driver 'evdev' for 'Sleep Button'
[    10.885] (II) Using input driver 'evdev' for 'Telink Wireless Receiver'
[    10.887] (II) No input driver specified, ignoring this device.
[    10.888] (II) Using input driver 'evdev' for 'Telink Wireless Receiver'
[    10.889] (II) Using input driver 'evdev' for 'TOSHIBA Web Camera - HD'
[    10.893] (II) No input driver specified, ignoring this device.
[    10.893] (II) No input driver specified, ignoring this device.
[    10.894] (II) No input driver specified, ignoring this device.
[    10.897] 	Module class: X.Org XInput Driver
[    10.897] 	ABI class: X.Org XInput driver, version 21.0
[    10.897] (II) Using input driver 'synaptics' for 'Elan Touchpad'
[    11.002] (II) Using input driver 'evdev' for 'AT Translated Set 2 keyboard'


veter9@chromebook:~$ free
             total       used       free     shared    buffers     cached
Mem:       1964540    1609940     354600     374744      14660     567552
-/+ buffers/cache:    1027728     936812
Swap:      2010108     465708    1544400
veter9@chromebook:~$
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Ответы на вопрос 2
По опыту знаю, что это встречается при установке на chromebok ubuntu-based дистрибутивов. При этом Arch и Manjaro видят полные 4 гигабайта. Однако с чем это связанно и как эту проблему решать, к сожалению, не подскажу.
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Frankenstine
@Frankenstine
Сисадмин
Покажите sudo dmidecode. Подозреваю, у вас таки 2 гига, а не 4. Могли поменять при перепродаже.
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