If you don't have another SD card to try and can lose these contents, its worth trying a reformat to a single partition, although Ubuntu generally seems very good at handling multi-partition SD cards.
I have hot plugged an SD card into Debian 7.9 (image 2015-11-12) same as you have done, (the card I used to flash with) and it worked, although it didn't automount. I see in your first post you said your card worked on a Debian 3.8 kernel, so I'd suspect it may be a kernel version issue or something wrong with the udev rules for your Ubuntu (sorry, I'm no help with these). Just as I about to hit "POST" it occurred to me the flasher may have cloned the image to the eMMC so the card may have the same UUID as the eMMC which might mess up the udev rules. Try blkid on your BBB to get the UUID of the eMMC and do it with the SD card in another system to see if they are the same. On Monday, February 1, 2016 at 9:59:53 AM UTC-6, Hilmar Lapp wrote: > > Any chance someone has an idea what might be going wrong here? I’d be > happy to reformat the card or take other destructive measures, but right > now the device for the card is not even showing up under /dev when the card > is inserted. > > Is it that the 4.1.15-ti-r40 kernel doesn’t support hot-plugging of uSD > cards? If so, anything I can do to change that? And I’m not sure how to > boot into the eMMC when the card is inserted in at boot. (The system will > boot into the SD card if inserted.) > > -hilmar > > On Jan 25, 2016, at 11:28 AM, Hilmar Lapp <[email protected] <javascript:>> > wrote: > > I am running the Ubuntu 14.04.3 image from Dec 11, 2015, on a Beaglebone > Black, with updated packages and updated kernel. System details below. When > I insert an SD card with 2 Linux partitions (and formatted ext4 > filesystems) on it after boot, it fails to be recognized. The following > message appears in syslog: > > Jan 25 11:01:52 hostname kernel: [47672.809891] mmc0: card never left busy > state > Jan 25 11:01:52 hostname kernel: [47672.814264] mmc0: error -110 whilst > initialising SD card > > The odd thing is that first this is the same card onto which I wrote and > then booted the downloaded image. I later flashed the card to the eMMC. So > I can boot from the card successfully (which presumably means the kernel > supports it), but when booting into the same kernel and rootfs from the > eMMC, it's reported as failing to initialize. Also, I *can* insert the card > perfectly fine into a BBB running Debian Wheezy with kernel 3.8.13-bone79 > booted from the eMMC - the kernel recognizes it, udisks-daemon fires, > partitions get mounted etc, all without any errors. So I'm rather confident > that the card is fine. > > Anyone got any ideas what I might be missing? > > -hilmar > > System details: starting image > bone-ubuntu-14.04.3-console-armhf-2015-12-11-2gb.img > > ubuntu@hostname:~$ lsb_release -a > No LSB modules are available. > Distributor ID: Ubuntu > Description: Ubuntu 14.04.3 LTS > Release: 14.04 > Codename: trusty > ubuntu@hostname:~$ uname -a > Linux hostname 4.1.15-ti-r40 #1 SMP PREEMPT Fri Jan 8 09:45:11 UTC 2016 > armv7l armv7l armv7l GNU/Linux > > > > -- > For more options, visit http://beagleboard.org/discuss > --- > You received this message because you are subscribed to a topic in the > Google Groups "BeagleBoard" group. > To unsubscribe from this topic, visit > https://groups.google.com/d/topic/beagleboard/IeLSZ19NbMU/unsubscribe. > To unsubscribe from this group and all its topics, send an email to > [email protected] <javascript:>. > For more options, visit https://groups.google.com/d/optout. > > > -- > Hilmar Lapp -:- lappland.io > > > > -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
