自己做的底板烧的Ubuntu系统，启动之后马上就“suspend_valid：..."

junjie4513

我自己做的底板，没有显示屏，用SD卡烧写Ubuntu系统成功后，启动，最后打印一句”x4418 login:“停留了很短的时间。最后的打印信息如下：
/***************************************************************/
[    3.232000] axp22_dldo1: incomplete constraints, leaving on
[    3.239000] axp22_aldo3: incomplete constraints, leaving on
[    3.245000] axp22_aldo2: incomplete constraints, leaving on
[    3.251000] axp22_aldo1: incomplete constraints, leaving on
[    3.257000] axp22_ldo1: incomplete constraints, leaving on
[    3.263000] otg_wakelock_init: No USB transceiver found
[    3.268000] nxp-rtc nxp-rtc.0: setting system clock to 2015-01-01 00:01:45 UTC (1420070505)
[    3.277000] ALSA device list:
[    3.280000]   #0: I2S-alc5623
[    3.283000]   #1: SPDIF-Transciever
    .485000] EXT4-fs (mmcblk0p7): 2 orphan inodes deleted
[    3.490000] EXT4-fs (mmcblk0p7): recovery complete
[    3.512000] EXT4-fs (mmcblk0p7): mounted filesystem with ordered data mode. Opts: (null)
[    3.520000] HDMI HPD State 0x1
[    3.524000] VFS: Mounted root (ext4 filesystem) on device 179:7.
[    3.531000] devtmpfs: mounted
[    3.535000] Freeing init memory: 228K
[    3.538000] Write protecting the kernel text section 80008000 - 808e8000
[    3.546000] rodata_test: attempting to write to read-only section:
[    3.552000] write to read-only section trapped, success
[    3.662000] _edid_i2c_read: can't read data, timeout
[    3.667000] _edid_read_block: failed to _edid_i2c_read ret -62
[    3.673000] _hdmi_hpd_changed: failed to edid update(), use static information

buntu 12.04.5 LTS x4418 console

x4418 login: [   14.462000] suspend_valid: not supported state(1)
[   14.490000] suspend_valid: not supported state(1)
[   14.568000] suspend_valid: not supported state(1)
[   14.596000] suspend_valid: not supported state(1)
[   14.722000] suspend_valid: not supported state(1)
[   14.741000] suspend_valid: not supported state(1)
/***************************************************************/

之后，在串口终端输入回车也没有任何回应了。这个问题是什么原因？要怎么解决呢？

junjie4513

终于排查出这个问题了，我们电源设计的是12V，我和做硬件的没有沟通好，一直用开发板的5V电源供电，现在OK了

junjie4513

我们的硬件是九鼎x4418开发板的阉割版，很多硬件模块都去掉了，这个会不会影响某些驱动的初始化？
但是哪些驱动会影响到调试串口的使用啊？

jjj

ubuntu是没有休眠功能得，这个应该是具体得某个驱动打印得，建议你重新升级下ubuntu，然后输入用户名及密码，root ，123456