关于bb black中国版使用问题

 不能睡下去，应该有些错误log吧，把log发一下。

你是不是用USB直接插电脑上供电了，因为USB一直在工作状态，所以休眠失败？试着5V DC直接供电去掉USB，看看是不是就可以正常休眠了。

您好，

我使用5v直接供的电。内核版本是BBB-eMMC-flasher-ubuntu-13.04-2013-10-08。

现在的问题是键入命令后不能休眠

root@arm:/sys/power# echo mem > /sys/power/state

bash: echo: write error: No such device

root@arm:/sys/power#

说找不到设备。

我换了新的内核 BBB-eMMC-flasher-debian-7.5-2014-05-14-2gb一样的问题。

启动时的打印能看出问题么。

U-Boot SPL 2014.04-00014-g47880f5 (Apr 22 2014 - 13:23:54)

reading args

spl_load_image_fat_os: error reading image args, err - -1

reading u-boot.img

reading u-boot.img

U-Boot 2014.04-00014-g47880f5 (Apr 22 2014 - 13:23:54)

I2C:   ready

DRAM:  512 MiB

NAND:  0 MiB

MMC:   OMAP SD/MMC: 0, OMAP SD/MMC: 1

*** Warning - readenv() failed, using default environment

Net:   <ethaddr> not set. Validating first E-fuse

MAC cpsw, usb_ether

Hit any key to stop autoboot:  0

gpio: pin 53 (gpio 53) value is 1

Card did not respond to voltage select!

mmc0(part 0) is current device

Card did not respond to voltage select!

gpio: pin 56 (gpio 56) value is 0

gpio: pin 55 (gpio 55) value is 0

gpio: pin 54 (gpio 54) value is 0

mmc1(part 0) is current device

gpio: pin 54 (gpio 54) value is 1

SD/MMC found on device 1

reading uEnv.txt

1699 bytes read in 5 ms (331.1 KiB/s)

gpio: pin 55 (gpio 55) value is 1

Loaded environment from uEnv.txt

Importing environment from mmc ...

 Checking if uenvcmd is set ...

gpio: pin 56 (gpio 56) value is 1

 Running uenvcmd ...

reading zImage

4103240 bytes read in 227 ms (17.2 MiB/s)

reading initrd.img

2952635 bytes read in 165 ms (17.1 MiB/s)

reading /dtbs/am335x-boneblack.dtb

25926 bytes read in 9 ms (2.7 MiB/s)

Kernel image @ 0x82000000 [ 0x000000 - 0x3e9c48 ]

## Flattened Device Tree blob at 88000000   

Booting using the fdt blob at 0x88000000   

Using Device Tree in place at 88000000, end 88009545

Starting kernel ...

Uncompressing Linux... done, booting the kernel.

[    0.378610] omap2_mbox_probe: platform not supported

[    0.533212] tps65217-bl tps65217-bl: no platform data provided

[    0.597074] bone-capemgr bone_capemgr.9: slot #0: No cape found

[    0.634181] bone-capemgr bone_capemgr.9: slot #1: No cape found

[    0.671290] bone-capemgr bone_capemgr.9: slot #2: No cape found

[    0.708400] bone-capemgr bone_capemgr.9: slot #3: No cape found

[    0.723058] bone-capemgr bone_capemgr.9: slot #6: BB-BONELT-HDMIN conflict P8.45 (#5:BB-BONELT-HDMI)

[    0.732678] bone-capemgr bone_capemgr.9: slot #6: Failed verification

[    0.739426] bone-capemgr bone_capemgr.9: loader: failed to load slot-6 BB-BONELT-HDMIN:00A0 (prio 2)

[    0.756958] omap_hsmmc mmc.5: of_parse_phandle_with_args of 'reset' failed

[    0.819997] pinctrl-single 44e10800.pinmux: pin 44e10854 already requested by 44e10800.pinmux; cannot claim for gpio-leds.8

[    0.831708] pinctrl-single 44e10800.pinmux: pin-21 (gpio-leds.8) status -22

[    0.838990] pinctrl-single 44e10800.pinmux: could not request pin 21 on device pinctrl-single

Loading, please wait...

Scanning for Btrfs filesystems

systemd-fsck[215]: rootfs: clean, 78992/230144 files, 408097/919296 blocks

Debian GNU/Linux 7 beaglebone ttyO0

default username:password is [debian:temppwd]

Support/FAQ: http://elinux.org/Beagleboard:BeagleBoneBlack_Debian

beaglebone login:

谢谢回复。 

建议还是用TI官方发布的SDK软件包试试吧，BBB板子中，不是我们官方发布的版本：

http://software-dl.ti.com/sitara_linux/esd/AM335xSDK/06_00_00_00/index_FDS.html