PC Engines APU1 Dual Core AMD T40E

Note: AstLinux 1.1.7 or later is required

Note: PC Engines APU1 will be discontinued in 2017, replaced by **[[userdoc:board_pcengines_apu2|APU2]]**

Board Specifications: apu1d

AstLinux Board Type:

  • “genx86_64-serial” (Serial Console: 19200 baud for AstLinux 1.2.10 and earlier, 115200 baud for AstLinux 1.3.0 and later)

Complete System Recommended Options:

  • Case: case1d2blku / case1d2redu or equivalent. Don't use the silver case.
  • AC Power Adapter (12 VDC, 2A, inner diameter 2.5 mm, outer 5.5 mm, center positive, it differs from the Alix)
  • Storage: mSATA SSD (or SD Card via USB internally, not recommended)
  • Included:
    • 2GB (apu1d) or 4GB (apu1d4) DRAM

Total System Power: 8 Watts when idle.

Performance: 59.1 secs. (Single-core test, lower is better)

time ( echo "scale=3456; 4*a(1)" | bc -l )




ALERT_SOUNDS="startup shutdown"  # Optional Sounds


# libsensors configuration file
# -----------------------------
# PC Engines APU1

# k10temp CPU sensor

Serial Console COM Port:

Note -> Skip this section for AstLinux 1.3.0 and later, which uses a 115200 baud rate.

For AstLinux 1.2.10 and earlier, the board type of “genx86_64-serial” defaults to a 19200 baud serial console, unfortunately the PC Engines's BIOS is fixed at 115200 baud, so if you want to view the BIOS console you must change the AstLinux serial console speed to match at 115200 baud. After persistent storage has been configured, from the CLI issue the following command:

setconsole-speed-tty 115200 ttyS0

Tip -> A reboot is required for the change to take effect.


The APU1 hardware does not include a keyboard controller, which by default Linux uses for a “soft-reboot”. Add the following argument to the AstLinux KCMD line in the file: /oldroot/cdrom/os/ (or os/ when mounted as a FAT16 volume on most any OS)


Note -> This reboot issue is fixed in the beta PC Engines APU1 BIOS apu140708 (2014-07-08).

If the SD Card is used for storage (not recommended) it is internally connected via USB and requires the following argument to the AstLinux KCMD line:


Since the SD Card will fail to fully boot without it, the KCMD must be edited in os/ when mounted as a FAT16 volume on most any OS, before it is placed into the APU1 board.

Tip -> More Info: Boot via USB Flash Storage

Note -> Any of the above KCMD addition(s) will be automatically propagated on future upgrades.


Inside 1

  • userdoc/board_pcengines_apu.txt
  • Last modified: 2019/07/25 07:44
  • by abelbeck