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Ubuntu Feisty Niggles

May 25th, 2007 · Posted by Who Knows? · 3 Comments

Calling these niggles might be somewhat euphemistic?

My first was the nuisance of actually finding these answers or workarounds. I suppose it’s easy enough for me, but despite being a techie, it was still somewhat time consuming. Now imagine the “lay person”… they just end up calling the nearest Ubuntu using techie, e.g. their brother? The technical answers system looks nifty, but wasn’t complete enough, and that is also simple as it could be. So, on to my two niggles:

  • Scanner problems – Bug #85488: some usb_devices fault if usb_suspend enabled. The symptoms? xsane does “scan”, but returns an all-black image. The command-line tool “scanimage” apparently works, but I want to use xsane. The work-around I’m using, use scanbuttond. Basically, run scanbuttond before plugging in the scanner. (You can kill it again when you’ve finished scanning.) It keeps the scanner busy enough that it doesn’t suspend. Usually. I find it does still break now and then, in which case I plug it out and in again – the more elegant solution might be to increase scanbuttond’s polling frequency. Whatever, works good enough for me. I found the info on the scanner problem here.
  • USB hard-drive unmount problemsBug #63090 – it seems this problem might affect all “usb storage devices” that have multiple partitions? Right click and “eject”, and they are momentarily unmounted, then remounted again – so how do you safely remove your USB storage device? The icky solution:
    $ sudo eject /media/Backups/
    (or whatever your mount point might be called, instead of “Backups”) every time you want to remove it. The more permanent/convenient work-around: make a plan with the /usr/share/hal/fdi/policy/10osvendor/10-storage-policy.fdi file. You can edit the file and set “requires_eject” option to “false”, or you can rename the file so it is ignored. Both solutions probably require restarting hald, the “easiest” way to do that, is “rebooting”. (There must be some other way… ah… a quick google turned up: “just rebooting is easiest, or do sudo
    /etc/dbus-1/event.d/20hal restart”. So that might work…)

Any questions? Leave a comment and I’ll most likely get back to you within 24 hours.

Categories: Technology

3 responses so far ↓

  • 1 Z // May 26, 2007 at 10:50 am

    Must… switch… to… Vista…

  • 2 Hugo // May 26, 2007 at 11:09 am


    I do wonder about my family sometimes, and urge/encourage them to do the windows thing every now and then. But I’m half-hearted about it. And I have used windows recently (*shock, horror*) for developing something for a “client”. I know once I move into the job market, I might move back to windows for professional stuff, depending on the job. I would prefer to not have to though.

    At home? Linux stays. This is my ninth year of using Linux, we have a good relationship, we understand one another. 😉

  • 3 Hugo // Jun 13, 2007 at 1:58 pm

    Note: seems this problem has been fixed in ubuntu-backports. (Fixed by recompiling gutsy’s version of hal for feisty.) That is somewhat disappointing, most people do not have backports enabled. Then again, I’m sure they’re assuming post people don’t have multiple partition USB storage devices…

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