El día Thursday, November 27, 2014 a las 10:43:42AM +0100, Matthias Apitz 

> I'm looking for a new netbook laptop; my old EeePC 900 (from 2008) has
> to short battery time, and the Acer Aspire One D250 has a problem with the
> display (from time to time goes completely white, the system is running,
> but one has to reboot to get an image again);
> What I want is more or less:
> -- 1-2 GByte RAM
> -- 1024x600 display, ~10 inch
> -- 50++ GByte SSD disk
> -- normal QWERTY/Z keyboard (i.o. no tablet)
> -- Wifi supported in head
> -- USB ports for UMTS dongle
> -- and of course, it should run FreeBSD;
> Any pointers to a modern device?

Some week ago I have asked the above question and with the free time
during the change of the year I can now answer it an I want to share
some experiences:

I found the Acer C720 Chromebook with the following technical data:

-- 2 GByte RAM (soldered on board, not update-able)
-- 2 core CPU, each 1.4 GHz
-- display 1366x768, ~11 inch, very nicely support by Xorg VESA driver
-- Wifi Atheros AR946x/AR948x, supported by ah(4)
-- sound supported by snd_hda(4)
-- 16 GByte SSD, can be swapped by, for example,  MTS400 M.2 SSD 128GB  SATA 
III, MLC (128 GByte)

I will attach a dmesg output;

The problem was:

1. It needs take apart the device to unlock the BIOS protection to be able to
   use a SeaBIOS for legacy boot from SSD or USB;
2. One needs some patches against -HEAD;

All this is very good documented by the author of the patches, Michael
Gmelin, in his blog:


Thanks to him for this work and his helping hand during my first steps with
this nice device. I think, the patches should be incorporated into SVN,
at the moment they are against -HEAD as of January 5th.

The keyboard of the C720, in principle a normal PC105, mine with German
layout QWERTZ, is a bit tricky: it has

- only F-keys from F1 to F10 and they are labeled with symbols for the
  ChromeOS applications;
- no hardware power-off (only by an ACPI key which is situated where F11
  would be, i.e. right above the Backspace key, you see the risk :-) )
- no Windows key which could be used as Modifier-key in X11;
- no PageUP/DOWN keys
- no 'blue Fn' key for additional functions (like audio or brightnes)

In his blog Michael documents as well ways to help out of this.

It now runs very nicely -HEAD (still booted from an USB stick because
I'm waiting for the 128 GByte SSD to swap it). I'm really surprised about
the battery: lasts for 6-8 hours. Wow!!!



Matthias Apitz, g...@unixarea.de, http://www.unixarea.de/ +49-170-4527211
1989-2014: The Wall was torn down so that we go to war together again.
El Muro ha sido derribado para que nos unimos en ir a la guerra otra vez.
Diese Grenze wurde aufgehoben damit wir gemeinsam wieder in den Krieg ziehen.
Copyright (c) 1992-2014 The FreeBSD Project.
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        The Regents of the University of California. All rights reserved.
FreeBSD is a registered trademark of The FreeBSD Foundation.
FreeBSD 11.0-CURRENT #0 r272526M: Thu Jan  1 05:30:48 CET 2015
FreeBSD clang version 3.4.1 (tags/RELEASE_34/dot1-final 208032) 20140512
VT: running with driver "vga".
CPU: Intel(R) Celeron(R) 2955U @ 1.40GHz (1396.79-MHz 686-class CPU)
  Origin="GenuineIntel"  Id=0x40651  Family=0x6  Model=0x45  Stepping=1
  AMD Features=0x2c100000<NX,Page1GB,RDTSCP,LM>
  AMD Features2=0x21<LAHF,ABM>
  Structured Extended Features=0x2603<FSGSBASE,TSCADJ,ERMS,INVPCID>
  XSAVE Features=0x1<XSAVEOPT>
  TSC: P-state invariant, performance statistics
real memory  = 2079817728 (1983 MB)
avail memory = 2014519296 (1921 MB)
Event timer "LAPIC" quality 600
FreeBSD/SMP: Multiprocessor System Detected: 2 CPUs
FreeBSD/SMP: 1 package(s) x 2 core(s)
 cpu0 (BSP): APIC ID:  0
 cpu1 (AP): APIC ID:  2
ioapic0 <Version 2.0> irqs 0-39 on motherboard
kbd1 at kbdmux0
module_register_init: MOD_LOAD (vesa, 0xc0f98550, 0) error 19
random: <Software, Yarrow> initialized
acpi0: <CORE COREBOOT> on motherboard
acpi0: Power Button (fixed)
hpet0: <High Precision Event Timer> iomem 0xfed00000-0xfed003ff on acpi0
Timecounter "HPET" frequency 14318180 Hz quality 950
Event timer "HPET" frequency 14318180 Hz quality 550
Event timer "HPET1" frequency 14318180 Hz quality 440
Event timer "HPET2" frequency 14318180 Hz quality 440
Event timer "HPET3" frequency 14318180 Hz quality 440
Event timer "HPET4" frequency 14318180 Hz quality 440
Event timer "HPET5" frequency 14318180 Hz quality 440
Event timer "HPET6" frequency 14318180 Hz quality 440
cpu0: <ACPI CPU> on acpi0
cpu1: <ACPI CPU> on acpi0
atrtc0: <AT realtime clock> port 0x70-0x77 on acpi0
Event timer "RTC" frequency 32768 Hz quality 0
attimer0: <AT timer> port 0x40-0x43,0x50-0x53 irq 0 on acpi0
Timecounter "i8254" frequency 1193182 Hz quality 0
Event timer "i8254" frequency 1193182 Hz quality 100
Timecounter "ACPI-fast" frequency 3579545 Hz quality 900
acpi_timer0: <24-bit timer at 3.579545MHz> port 0x1008-0x100b on acpi0
acpi_ec0: <Embedded Controller: GPE 0x24> port 0x62,0x66 on acpi0
acpi_lid0: <Control Method Lid Switch> on acpi0
acpi_button0: <Power Button> on acpi0
acpi_button1: <Sleep Button> irq 37 on acpi0
acpi_button2: <Sleep Button> irq 38 on acpi0
pcib0: <ACPI Host-PCI bridge> port 0xcf8-0xcff on acpi0
pci0: <ACPI PCI bus> on pcib0
vgapci0: <VGA-compatible display> port 0x1800-0x183f mem 
0xe0000000-0xe03fffff,0xd0000000-0xdfffffff at device 2.0 on pci0
vgapci0: Boot video device
hdac0: <Intel Haswell HDA Controller> mem 0xe0510000-0xe0513fff at device 3.0 
on pci0
xhci0: <Intel Panther Point USB 3.0 controller> mem 0xe0500000-0xe050ffff at 
device 20.0 on pci0
xhci0: 32 byte context size.
xhci0: Port routing mask set to 0xffffffff
usbus0 on xhci0
pci0: <base peripheral, DMA controller> at device 21.0 (no driver attached)
pci0: <serial bus> at device 21.1 (no driver attached)
pci0: <serial bus> at device 21.2 (no driver attached)
hdac1: <Intel Lynx Point-LP HDA Controller> mem 0xe0514000-0xe0517fff at device 
27.0 on pci0
pcib1: <ACPI PCI-PCI bridge> at device 28.0 on pci0
pci1: <ACPI PCI bus> on pcib1
ath0: <Atheros AR946x/AR948x> mem 0xe0400000-0xe047ffff at device 0.0 on pci1
ar9300_attach: calling ar9300_hw_attach
ar9300_hw_attach: calling ar9300_eeprom_attach
ar9300_flash_map: unimplemented for now
Restoring Cal data from DRAM
Restoring Cal data from EEPROM
Restoring Cal data from Flash
Restoring Cal data from Flash
Restoring Cal data from OTP
ar9300_hw_attach: ar9300_eeprom_attach returned 0
ath0: [HT] enabling HT modes
ath0: [HT] enabling short-GI in 20MHz mode
ath0: [HT] 1 stream STBC receive enabled
ath0: [HT] 1 stream STBC transmit enabled
ath0: [HT] 2 RX streams; 2 TX streams
ath0: AR9460 mac 640.2 RF5110 phy 1638.7
ath0: 2GHz radio: 0x0000; 5GHz radio: 0x0000
ehci0: <Intel Lynx Point LP USB 2.0 controller USB> mem 0xe051f800-0xe051fbff 
at device 29.0 on pci0
usbus1: EHCI version 1.0
usbus1 on ehci0
isab0: <PCI-ISA bridge> at device 31.0 on pci0
isa0: <ISA bus> on isab0
ahci0: <Intel Lynx Point-LP AHCI SATA controller> port 
0x1860-0x1867,0x1870-0x1873,0x1868-0x186f,0x1874-0x1877,0x1840-0x185f mem 
0xe051f000-0xe051f7ff irq 22 at device 31.2 on pci0
ahci0: AHCI v1.30 with 2 6Gbps ports, Port Multiplier not supported
ahcich0: <AHCI channel> at channel 0 on ahci0
acpi_tz0: <Thermal Zone> on acpi0
acpi_acad0: <AC Adapter> on acpi0
battery0: <ACPI Control Method Battery> on acpi0
uart0: <8250 or 16450 or compatible> port 0x3f8-0x3ff irq 4 flags 0x10 on acpi0
atkbdc0: <Keyboard controller (i8042)> port 0x60,0x64 irq 1 on acpi0
atkbd0: <AT Keyboard> irq 1 on atkbdc0
kbd0 at atkbd0
atkbd0: [GIANT-LOCKED]
pmtimer0 on isa0
ata0: <ATA channel> at port 0x1f0-0x1f7,0x3f6 irq 14 on isa0
ata1: <ATA channel> at port 0x170-0x177,0x376 irq 15 on isa0
ppc0: parallel port not found.
est0: <Enhanced SpeedStep Frequency Control> on cpu0
est1: <Enhanced SpeedStep Frequency Control> on cpu1
Timecounters tick every 1.000 msec
IP Filter: v5.1.2 initialized.  Default = pass all, Logging = enabled
hdacc0: <Intel Haswell HDA CODEC> at cad 0 on hdac0
hdaa0: <Intel Haswell Audio Function Group> at nid 1 on hdacc0
pcm0: <Intel Haswell (HDMI/DP 8ch)> at nid 3 on hdaa0
hdacc1: <Realtek (0x0283) HDA CODEC> at cad 0 on hdac1
hdaa1: <Realtek (0x0283) Audio Function Group> at nid 1 on hdacc1
hdaa1: hdaa_audio_as_parse: Pin 26 has wrong direction for association 1! 
Disabling association.
hdaa1: hdaa_audio_as_parse: Pin 33 has wrong direction for association 2! 
Disabling association.
random: unblocking device.
usbus0: 5.0Gbps Super Speed USB v3.0
usbus1: 480Mbps High Speed USB v2.0
ugen0.1: <0x8086> at usbus0
uhub0: <0x8086 XHCI root HUB, class 9/0, rev 3.00/1.00, addr 1> on usbus0
ugen1.1: <Intel> at usbus1
uhub1: <Intel EHCI root HUB, class 9/0, rev 2.00/1.00, addr 1> on usbus1
uhub0: 13 ports with 13 removable, self powered
uhub1: 2 ports with 2 removable, self powered
ugen0.2: <SunplusIT Inc> at usbus0
ugen1.2: <vendor 0x8087> at usbus1
uhub2: <vendor 0x8087 product 0x8000, class 9/0, rev 2.00/0.04, addr 2> on 
uhub2: 8 ports with 8 removable, self powered
usbd_setup_device_desc: getting device descriptor at addr 2 failed, 
usbd_setup_device_desc: getting device descriptor at addr 2 failed, 
ada0 at ahcich0 bus 0 scbus0 target 0 lun 0
ada0: <KINGSTON SNS4151S316G S9FM01.1> ATA-10 SATA 3.x device
ada0: Serial Number 50026B723A00B1B7
ada0: 600.000MB/s transfers (SATA 3.x, UDMA5, PIO 8192bytes)
ada0: Command Queueing enabled
ada0: 15272MB (31277232 512 byte sectors: 16H 63S/T 16383C)
ada0: Previously was known as ad4
SMP: AP CPU #1 Launched!
Timecounter "TSC" frequency 1396794312 Hz quality 1000
Root mount waiting for: usbus0
usbd_setup_device_desc: getting device descriptor at addr 2 failed, 
Root mount waiting for: usbus0
Root mount waiting for: usbus0
Root mount waiting for: usbus0
usbd_setup_device_desc: getting device descriptor at addr 2 failed, 
Root mount waiting for: usbus0
Root mount waiting for: usbus0
Root mount waiting for: usbus0
usbd_setup_device_desc: getting device descriptor at addr 2 failed, 
ugen0.3: <Unknown> at usbus0 (disconnected)
uhub_reattach_port: could not allocate new device
Root mount waiting for: usbus0
ugen0.3: <SMI Technology> at usbus0
umass0: <SMI Technology Intenso Premium Line, class 0/0, rev 2.00/10.00, addr 
3> on usbus0
umass0:  SCSI over Bulk-Only; quirks = 0x4000
umass0:3:0: Attached to scbus3
Trying to mount root from ufs:/dev/ufs/FreeBSD_Install [ro,noatime]...
mountroot: waiting for device /dev/ufs/FreeBSD_Install ...
da0 at umass-sim0 bus 0 scbus3 target 0 lun 0
da0: <Intenso Premium > Removable Direct Access SCSI-0 device 
da0: Serial Number 11082000053285
da0: 40.000MB/s transfers
da0: 7560MB (15482880 512 byte sectors: 255H 63S/T 963C)
da0: quirks=0x2<NO_6_BYTE>
wlan0: Ethernet address: 80:56:f2:83:c1:17
wlan0: link state changed to UP
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