error messages on serial console during BBGW bootup

[Stephane Charette]

The serial debug cable I ordered for my BBGW finally got here.  I downloaded RCN's most recent build, BBGW-blank-debian-8.5-seeed-iot-armhf-2016-09-04-4gb.img.

I did see a few errors on the serial console during the installation:

Creating journal (16384 blocks): done

Writing superblocks and filesystem accounting information: done 

Formatting: /dev/mmcblk1 complete

...cut...

[  116.630830] 6144 pages cma reserved

[  116.634355] edma 49000000.edma: edma_prep_slave_sg: Failed to allocate a descriptor

[  116.642061] omap_hsmmc 481d8000.mmc: prep_slave_sg() failed

[  116.647671] omap_hsmmc 481d8000.mmc: MMC start dma failure

[  117.305788] mmcblk1: unknown error -1 sending read/write command, card status 0x900

[  117.313590] blk_update_request: I/O error, dev mmcblk1, sector 4720640

[  117.320212] blk_update_request: I/O error, dev mmcblk1, sector 4720648

[  117.326810] blk_update_request: I/O error, dev mmcblk1, sector 4720656

[  117.333405] blk_update_request: I/O error, dev mmcblk1, sector 4720664

The installation does seem to continue, and it shuts down cleanly at the end.  Not sure if those I/O errors are important.

When I reboot it without the micro SD card, things seem OK, though I see this:

[    2.169781] PM: Cannot get wkup_m3_ipc handle

[    2.289107] bone_capemgr bone_capemgr: slot #0: No cape found

[    2.333102] bone_capemgr bone_capemgr: slot #1: No cape found

[    2.377098] bone_capemgr bone_capemgr: slot #2: No cape found

[    2.421098] bone_capemgr bone_capemgr: slot #3: No cape found

Loading, please wait...

fsck: error 2 (No such file or directory) while executing fsck.ext4 for /dev/mmcblk1p1

fsck exited with status code 8

I'm then presented with the usual login prompt.  When I login and run ifconfig, I see no wireless device.  But if I wait a minute or so and try again, the wireless eventually does show up.

Is this par for the course?  Should I be worried about any of these errors?

Stéphane

[amitbh...@gmail.com]

I am also facing similar issues of not being able to boot the BBGW. Can you recommend which debugger/cable did you use. I tries searching the net but found only your page.

-Amit

[Robert Nelson]

On Mon, Mar 27, 2017 at 12:08 PM, <amitbh...@gmail.com> wrote:
> I am also facing similar issues of not being able to boot the BBGW. Can you
> recommend which debugger/cable did you use. I tries searching the net but
> found only your page.

http://elinux.org/Beagleboard:BeagleBone_Black_Serial

Regards,

--
Robert Nelson
https://rcn-ee.com/