ASUS X551MA

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Reason: Needs a hardware table and a function keys section (Discuss in Talk:ASUS X551MA)

Hardware

  • Platform: Bay Trail M (Atom)
  • CPU: Intel(R) Pentium(R) CPU N3520 @ 2.16GHz (quad core)
  • RAM: DDR3 1333MHz 4096 MB
  • SCREEN: 15.6"
  • VIDEO: Intel GMA HD 1366x768
  • HDD: 500 GB TOSHIBA MQ01ABF050 5400R SATA
  • Wi-fi: BCM943142HM 802.11b/g/n (+ Bluetooth 4.0)
  • Network: Realtek Semiconductor Co., Ltd. RTL8101/2/6E PCI Express Fast/Gigabit Ethernet controller (rev 06)
  • DVD-RW
  • 1xUSB 2.0, 1xUSB 3.0, 1xHDMI, 1xD-sub, 1xEthernet, Cardreader, Camera

Settings

Video

For Intel GMA HD install: xf86-video-intel

LAN

Works out of the box

Wi-fi

Install from AUR: broadcom-wl or (better) broadcom-wl-dkms

Audio

Works out of the box. KDE: Install kmix

Touchpad

Works out of the box

Brightness

Fn+F5/Fn+F6 controls display brightness. Kernel parameter: acpi_osi= acpi_backlight=native For example for the systemd-boot EFI boot manager: 

# cat /boot/loader/entries/arch.conf
title   Arch Linux
linux   /vmlinuz-linux
initrd  /initramfs-linux.img
options root=PARTUUID=dfe3c3a3-ea61-4440-ba0a-2b29267298cb rw acpi_osi= acpi_backlight=native

KDE: install powerdevil

Webcam

Works out of the box. Tested at online webcam tester in Chromium.

Bluetooth

Bluetooth 4.0 is in combo wireless chip BCM43142.

Install: bluez and bluez-utils 

# dmesg | grep -i bluetooth
[   21.959501] Bluetooth: Core ver 2.21
[   21.959527] Bluetooth: HCI device and connection manager initialized
[   21.959533] Bluetooth: HCI socket layer initialized
[   21.959536] Bluetooth: L2CAP socket layer initialized
[   21.959554] Bluetooth: SCO socket layer initialized
[   22.020034] Bluetooth: hci0: BCM: chip id 70
[   22.036791] Bluetooth: hci0: thinkbali
[   22.036795] Bluetooth: hci0: BCM (001.001.011) build 0172
[   22.102001] bluetooth hci0: Direct firmware load for brcm/BCM.hcd failed with error -2
[   22.102007] Bluetooth: hci0: BCM: Patch brcm/BCM.hcd not found
[   25.435436] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
[   25.435438] Bluetooth: BNEP filters: protocol multicast
[   25.435444] Bluetooth: BNEP socket layer initialized

In spite of hci0: BCM: Patch brcm/BCM.hcd not found the bluetooth module works: 

# hciconfig -a
hci0:   Type: Primary  Bus: USB
       BD Address: A4:DB:30:BB:2F:C1  ACL MTU: 1021:8  SCO MTU: 64:1
       DOWN 
       RX bytes:872 acl:0 sco:0 events:35 errors:0
       TX bytes:383 acl:0 sco:0 commands:35 errors:0
       Features: 0xff 0xfe 0xcf 0xfe 0xdb 0xff 0x7b 0x87
       Packet type: DM1 DM3 DM5 DH1 DH3 DH5 HV1 HV2 HV3 
       Link policy: RSWITCH HOLD SNIFF 
       Link mode: SLAVE ACCEPT 

# hciconfig hci0 up
# hciconfig -a

hci0:   Type: Primary  Bus: USB
       BD Address: A4:DB:30:BB:2F:C1  ACL MTU: 1021:8  SCO MTU: 64:1
       UP RUNNING PSCAN ISCAN 
       RX bytes:1488 acl:0 sco:0 events:72 errors:0
       TX bytes:1091 acl:0 sco:0 commands:72 errors:0
       Features: 0xff 0xfe 0xcf 0xfe 0xdb 0xff 0x7b 0x87
       Packet type: DM1 DM3 DM5 DH1 DH3 DH5 HV1 HV2 HV3 
       Link policy: RSWITCH HOLD SNIFF 
       Link mode: SLAVE ACCEPT 
       Name: 'thinkbali'
       Class: 0x00010c
       Service Classes: Unspecified
       Device Class: Computer, Laptop
       HCI Version: 4.0 (0x6)  Revision: 0xac
       LMP Version: 4.0 (0x6)  Subversion: 0x210b
       Manufacturer: Broadcom Corporation (15)

Sometimes it is needed to run: 

# rfkill unblock bluetooth

blueman works correctly.

Here https://forum.libreelec.tv/post-12512.html[dead link 2020-03-28 ⓘ] I have found a firmware for BCM43142 - BCM.hcd. 

# unzip BCM.zip
# cp BCM.hcd /lib/firmware/brcm/

After restart: 

# dmesg | grep -i bluetooth
[   21.606725] Bluetooth: Core ver 2.21
[   21.606750] Bluetooth: HCI device and connection manager initialized
[   21.606758] Bluetooth: HCI socket layer initialized
[   21.606762] Bluetooth: L2CAP socket layer initialized
[   21.606771] Bluetooth: SCO socket layer initialized
[   21.663192] Bluetooth: hci0: BCM: chip id 70
[   21.679212] Bluetooth: hci0: thinkbali
[   21.679218] Bluetooth: hci0: BCM (001.001.011) build 0172
[   22.414606] Bluetooth: hci0: BCM (001.001.011) build 0172
[   22.430520] Bluetooth: hci0: Broadcom Bluetooth Device (43142)
[   25.208811] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
[   25.208814] Bluetooth: BNEP filters: protocol multicast
[   25.208822] Bluetooth: BNEP socket layer initialized

But I felt no any difference without or with firmware.

Card Reader

Works out of the box. Tested with SD card 512 Mb.

Dual boot with Windows

To boot Windows 7 it is needed to switch on CSM at BIOS. Otherwise Windows boot hangs at logo. Set the BIOS setting OS Selection in the Advanced menu to Windows 7.

Freezing on 4.x kernels

Pentium N3520 processor is affected by the c-state bug: https://bugzilla.kernel.org/show_bug.cgi?id=109051

Workaround: add intel_idle.max_cstate=1 kernel parameter.