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61
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Hardware and U-Boot firmware / Hardware / Re: New plug - D2
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on: May 29, 2011, 05:05:31 PM
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Here you go:
<http://www.newegg.com/Product/Product.aspx?Item=N82E16813154020&cm_re=e350-_-13-154-020-_-Product>
You do have to add a ram stick and maybe a USB stick wireless solution if you need that And a case, and a power supply??? |
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62
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Linux Stuff / Kernel / Re: mmc support in 2.6.37 and 2.6.38
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on: May 08, 2011, 02:18:58 PM
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That's not an fstab issue - it's a oot option issue (cat /proc/cmdline to see what you are using). Ah - you already have - your problem is something else. I got carried away with the UUID usage. FWIW, my /etc/fstab contains: /dev/mmcblk0p1 /boot ext2 relatime 1 1 and I end up with Filesystem 1K-blocks Used Available Use% Mounted on
/dev/mmcblk0p1 99649 9436 85068 10% /boot and I'm using 2.6.38.5. I've had no problem with any 2.6.37* or 2.6.38* kernel (since if I did I wouldn't have been able to change it easily) |
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63
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Linux Stuff / Kernel / Re: mmc support in 2.6.37 and 2.6.38
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on: May 08, 2011, 02:10:19 PM
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VFS: Cannot open root device "mmcblk0p2" or unknown-block(2,0)
Please append a correct "root=" boot option; here are the available partitions: That's not an fstab issue - it's a boot option issue (cat /proc/cmdline to see what you are using). There was a change in this area recently (indeed - it was in 2.6.37) commit b5af921ec02333e943efb59aca4f56b78fc0e100 Author: Will Drewry < wad@chromium.org> Date: Tue Aug 31 15:47:07 2010 -0500 init: add support for root devices specified by partition UUID This is the third patch in a series which adds support for storing partition metadata, optionally, off of the hd_struct. One major use for that data is being able to resolve partition by other identities than just the index on a block device. Device enumeration varies by platform and there's a benefit to being able to use something like EFI GPT's GUIDs to determine the correct block device and partition to mount as the root. This change adds that support to root= by adding support for the following syntax: root=PARTUUID=hex-uuid Signed-off-by: Will Drewry < wad@chromium.org> Signed-off-by: Jens Axboe < jaxboe@fusionio.com> but before that it wouldn't have worked either, unless you were using an initrd image. |
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64
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Linux Stuff / General Linux questions / Re: aplay outputs 'Invalid value for card'
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on: April 26, 2011, 05:13:10 PM
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I have a SheevaPlug (not DreamPlug) and these are the notes of how I got audio working (on Debian Squeeze). Not much, but it might be worth trying these... In order to get sound working I had to:
a) Run, as root:
alsactl init 1
The USB sound device ends up as device 1, even though a lot of things
seem to default to using 0.
b) Run, as root:
service alsa-utils start
This was *not* needed after reboots.
c) Add myself to the audio group, as the devices get set to that group
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65
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Hardware and U-Boot firmware / Hardware / Re: Is this a Sympton of a dying SD-Card?
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on: April 06, 2011, 01:59:55 PM
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the file system of the SD card is about 6 Gig so it could be an issue
Why would you need so much memory to fsck a file system? What on Earth would you do if you ever needed to fsck a 1TB disk? It only checks the meta-data, and it doesn't even need to keep all of that in memory at once anyway. The "memory allocation failure" sounds like a bug. It's found a problem on the disk, but is treating the data as real, so trying to allocate vast amounts of memory., |
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66
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Hardware and U-Boot firmware / Hardware / Re: Is this a Sympton of a dying SD-Card?
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on: April 05, 2011, 04:55:51 PM
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I had an SD card fail after ~15 months of use. The symptoms I saw were that writes "succeeded" (in that no error was reported), but nothing was actually written. Somewhat disconcerting - it tests your sanity.
To fix it I switched to using a USB drive instead - only /boot is now on SD for me.
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67
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Linux Stuff / Kernel / Re: Issues with 2.6.38.2
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on: April 04, 2011, 05:30:46 PM
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Just FYI, I have a different setup (this is on a SheevaPlug), as I boot from SD, but have everything other than /boot on a USB drive. My boot messages include: Waiting 10sec before mounting root device...
mmc0: host does not support reading read-only switch. assuming write-enable.
usb 1-1: new high speed USB device using orion-ehci and address 2
mmc0: new high speed SDHC card at address b368
mmcblk0: mmc0:b368 SD 15.4 GiB
mmcblk0: p1 p2 p3 p4 < p5 >
hub 1-1:1.0: USB hub found
hub 1-1:1.0: 7 ports detected i.e. it works for my setup. |
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70
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Hardware and U-Boot firmware / U-Boot stuff / Re: Upgrading uboot on Globalscale Sheevaplug
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on: March 18, 2011, 05:34:37 PM
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You can test u-boot without writing it in to storage. you will need to have access to u-boot elf file, not the .kwb file. I use openond to load it into ram. Thanks. But those instruction seemed to be a way of testing it on a running kernel!?! I was really just wondering whether it could be tested at the "console prompt" ( i.e. before any kernel had booted) without writing it to nand. |
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71
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Hardware and U-Boot firmware / U-Boot stuff / Re: Upgrading uboot on Globalscale Sheevaplug
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on: March 17, 2011, 04:27:55 PM
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First of all, I think you have failed to upgrade u-boot. from your early post, you state that you load u-boot.bin in memory but I did not see any description you write it back to nand. Related to this, can I test a new uboot by loading it and the running commands, but not the ones() to save it back to nand. By test I mean try it, and if it fails then a power off/on will take me back to where I was with the previous, working uboot. And, if I do update uboot, do I lose environment variables and have to reset them? |
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72
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General Category / General Discussion / Re: Sheevaplug restarts at 6:25
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on: February 23, 2011, 02:55:34 PM
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Grateful for any suggestions, I will continue setting up logs and try to find out if really something is happening on the disks. I don't want the disks to spin up every night for no reason.
How are you checksumming the disks every hour without spinning them up? Why not get the script, if it is 7am, and if it sees a change, to run find to list all entries with "-mmin -60" and mail the result (or leave it in /var/tmp for you to peruse later)? |
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73
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General Category / General Discussion / Re: Sheevaplug restarts at 6:25
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on: February 22, 2011, 05:04:07 PM
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Every day at 06:25, my Sheevaplug restarts. This is the line from syslog:
Feb 21 06:25:14 Sheeva_1 syslogd 1.5.0#5ubuntu3: restart.
Isn't that syslogd restarting? As part of log rotation? The logs get renamed, then syslgod is sent a HUP to re-open all of its log files. What makes you think the Plug is restarting. What does uptime report for the system uptime? |
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74
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General Category / General Discussion / Re: Dropbox for LinuxARM.
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on: February 20, 2011, 06:30:38 PM
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Anyone use Dropbox? (if not, why not?) The only problem is, no Linux/ARM support. I presume you are talking about the client? The source is available, and it compiles (at least it does on Debian squeeze on a Plug). Have you tried this? (I don't use it at all, so can't say). |
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75
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General Category / General Discussion / Re: Questions About Plug Computers
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on: February 20, 2011, 06:07:38 PM
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A Plug will have to be much simpler to install and use before the average consumer will buy into the idea. The things most of are using here are development boxes, with no particular intent on them being used for end-user products, I've always assumed that any end-user product would be based on the hardware, but a "just plug in and use" setup for a specific function. But, someone who mostly uses email and does some Internet browsing, may end up with their actual email on a Plug. . . . More likely they'll end up with it on their 'phone - and that will be able to be dropped into a "connector" for a larger display. It might backed up to a Plug - but how many non-tech people run backups? Have a look at these two links (and the link to the Motorola Atrix in the first one). |
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