Re: [SLUG] removing a custom kernel
pe...@chubb.wattle.id.au wrote: david == david da...@kenpro.com.au writes: david I have a custom kernel installed to run VMWare. I've now david switched to virtual box and want to get rid of the custom david kernel. david # dpkg -r linux-image-2.6.31.6-custom reboot with a different kernel first. Removing the modules for the kernel you're currently running can be dangerous. That made good sense, so I did it, and no nasty messages happened. then I got this swag of errors. I've been googling madly but no joy. /dev/sdb1 (root drive) and /dev/sdc1 (unmounted backup) both have boot directories. It leaves me somewhat nervous about re-booting. Any suggestions? thanks da...@david:/usr/src$ sudo dpkg -r linux-image-2.6.31.6-custom (Reading database ... 178528 files and directories currently installed.) Removing linux-image-2.6.31.6-custom ... Examining /etc/kernel/prerm.d. run-parts: executing /etc/kernel/prerm.d/dkms Running postrm hook script /usr/sbin/update-grub. Generating grub.cfg ... Found linux image: /boot/vmlinuz-2.6.31-19-generic Found initrd image: /boot/initrd.img-2.6.31-19-generic grub-probe: error: Cannot find a GRUB drive for /dev/sdb1. Check your device.map. grub-probe: error: Cannot find a GRUB drive for /dev/sdb1. Check your device.map. Found linux image: /boot/vmlinuz-2.6.31-17-generic Found initrd image: /boot/initrd.img-2.6.31-17-generic grub-probe: error: Cannot find a GRUB drive for /dev/sdb1. Check your device.map. grub-probe: error: Cannot find a GRUB drive for /dev/sdb1. Check your device.map. Found linux image: /boot/vmlinuz-2.6.31-14-generic Found initrd image: /boot/initrd.img-2.6.31-14-generic grub-probe: error: Cannot find a GRUB drive for /dev/sdb1. Check your device.map. grub-probe: error: Cannot find a GRUB drive for /dev/sdb1. Check your device.map. Found memtest86+ image: /boot/memtest86+.bin Found Ubuntu 9.10 (9.10) on /dev/sdc1 grub-probe: error: Cannot find a GRUB drive for /dev/sdc1. Check your device.map. grub-probe: error: Cannot find a GRUB drive for /dev/sdc1. Check your device.map. grub-probe: error: Cannot find a GRUB drive for /dev/sdc1. Check your device.map. grub-probe: error: Cannot find a GRUB drive for /dev/sdc1. Check your device.map. grub-probe: error: Cannot find a GRUB drive for /dev/sdc1. Check your device.map. grub-probe: error: Cannot find a GRUB drive for /dev/sdc1. Check your device.map. grub-probe: error: Cannot find a GRUB drive for /dev/sdc1. Check your device.map. grub-probe: error: Cannot find a GRUB drive for /dev/sdc1. Check your device.map. done The link /vmlinuz is a damaged link Removing symbolic link vmlinuz Unless you used the optional flag in lilo, you may need to re-run your boot loader[lilo] The link /initrd.img is a damaged link Removing symbolic link initrd.img Unless you used the optional flag in lilo, you may need to re-run your boot loader[lilo] -- SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html
Re: [SLUG] removing a custom kernel
david == david da...@kenpro.com.au writes: david then I got this swag of errors. I've been googling madly but no david joy. david /dev/sdb1 (root drive) and /dev/sdc1 (unmounted backup) both david have boot directories. It leaves me somewhat nervous about david re-booting. Any suggestions? david thanks This sounds like grub2. I'm not much help there --- the config files are not documented, and the tools have near-useless man pages. There should however be a way to regenerate the device map that tells grub what BIOS drive number corresponds to which drive. I have no idea how to tell whether such a generated file is correct -- it seems that the BIOS drive numbers change around depending on what you tell SETUP, and how it chooses to scan the scsi, sata and IDE buses today. And how those numbers then map onto the grub numbers (hd0,n) is also magic. Try running grub-mkdevicemap before doing an apt-get -f install to rerun unconfigured bits and see if that helps. Check the /boot/grub/device.map file. It should contain something like (hd0) /dev/sdb (hd1) /dev/sdc assuming that you want to use /dev/sdb as the boot device. -- SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html
Re: [SLUG] Mentoring
On Tue, 2010-02-16 at 12:58 +1100, John Nielsen wrote: Hi All I'm aware that this a little off topic...I have started a Diploma in Website development at Ultimo TAFE. I am finding it somewhat challenging especially with all the HTML coding to some extent as I am totally new to that and the Java. Who among you would be willing to mentor me and be willing to answer questions that I may have? If you post the questions showing what you have done to solve the problem on slug chat then you will probably get a direction to an answer. Ta Ken -- SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html
Re: [SLUG] Mentoring
Hello John, further to Ken's response, the best textual beginners guide is Elizabeth Castro's HTML, XHTML, and CSS, Sixth Ed ISBN 978-0321430847. She has also published HTML 4 for the World Wide Web. Printed as Visual Quickstart Guides, they are easy reading with very good exercises explanations. Even if these titles are not in your textbook list, they are a fabulous resource for new web designers. cheers, Meryl -- SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html
Re: [SLUG] Mailing list web archives..... Is this leagal ?
On Tuesday 16 February 2010 09:59:37 pe...@chubb.wattle.id.au wrote: I am not a lawyer, but structly speaking, I believe that copyright in the individual members' posts resides with the poster. So theoritcally you';d have to ask all the people who post to all the mailing lists. In practice though it doesn;t matter --- in sending something to a mailing list one implcitly gives permission to all the consumers of that list, including third party archive sites, to reproduce the message. Peter's comments on the key principles that apply are mostly correct. The only thing I would add is be careful in relying on implied consent. The scope of implied consent in the case of mailing list traffic is not something that is entirely certain. Implying consent for a person to quote a message in reply (such as in the quote above, for example), or for the list owner to keep an archive, is likely to be easier than implying consent for third party archiving. If somebody whose posts on a mailing list were to go and sue a third party archiver the answer would likely only be determined after some disproportionately expensive litigation that would end in tears for everybody except the lawyers. -- SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html
Re: [SLUG] Mailing list web archives..... Is this leagal ?
On Wed, 17 Feb 2010 09:12:59 +1100 Troy Rollo t...@parrycarroll.com.au wrote: On Tuesday 16 February 2010 09:59:37 pe...@chubb.wattle.id.au wrote: I am not a lawyer, but structly speaking, I believe that copyright in the individual members' posts resides with the poster. So theoritcally you';d have to ask all the people who post to all the mailing lists. In practice though it doesn;t matter --- in sending something to a mailing list one implcitly gives permission to all the consumers of that list, including third party archive sites, to reproduce the message. Peter's comments on the key principles that apply are mostly correct. The only thing I would add is be careful in relying on implied consent. The scope of implied consent in the case of mailing list traffic is not something that is entirely certain. Implying consent for a person to quote a message in reply (such as in the quote above, for example), or for the list owner to keep an archive, is likely to be easier than implying consent for third party archiving. If somebody whose posts on a mailing list were to go and sue a third party archiver the answer would likely only be determined after some disproportionately expensive litigation that would end in tears for everybody except the lawyers. Real lawyers don't cry :-). I add my support to this caution. The Courts are recognising increased expectations of privacy and pulling back on implied consent. Cheers, Alan -- SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html -- Alan L Tyreehttp://www2.austlii.edu.au/~alan Tel: 04 2748 6206 -- SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html
Re: [SLUG] Mentoring
There is also the Webstandards Group, which has a very active mailing list, and also possibly of wider interest: February Sydney WSG meeting 2010 24 February 2010 Justin Mclean: Connecting open source hardware to the web. http://webstandardsgroup.org/ Marghanita -- Marghanita da Cruz http://ramin.com.au Tel: 0414-869202 -- SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html
Re: [SLUG] Mailing list web archives..... Is this leagal ?
On Wed, 2010-02-17 at 09:12 +1100, Troy Rollo wrote: Implying consent for a person to quote a message in reply (such as in the quote above, for example), or for the list owner to keep an archive, is likely to be easier than implying consent for third party archiving. gmane archives on request of the list owner, which, while not explicit consent on the part of the originator, is at least a relationship with the mailing list and that list owner can indicate who (if anyone) is archiving the list with their consent. Given how long public mailing lists have been around, and given how long public web archives of them have been available, it'd be rather hard to construct an argument that someone _posting_ to a public list should have an expectation that no one would be able to see their content. But publishing a recooked archive of someone else's list (as opposed to archiving your own list or asking gmane to do it on your behalf) without their consent is pushing it. If nothing else, it is redistribution, and in open source land we tend to care about getting the semantics of that right. AfC Sydney signature.asc Description: This is a digitally signed message part -- SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html
Re: [SLUG] Mailing list web archives..... Is this leagal ?
Troy Rollo wrote: On Tuesday 16 February 2010 09:59:37 pe...@chubb.wattle.id.au wrote: I am not a lawyer, but structly speaking, I believe that copyright in the individual members' posts resides with the poster. So theoritcally you';d have to ask all the people who post to all the mailing lists. In practice though it doesn;t matter --- in sending something to a mailing list one implcitly gives permission to all the consumers of that list, including third party archive sites, to reproduce the message. Peter's comments on the key principles that apply are mostly correct. The only thing I would add is be careful in relying on implied consent. The scope of implied consent in the case of mailing list traffic is not something that is entirely certain. Implying consent for a person to quote a message in reply (such as in the quote above, for example), or for the list owner to keep an archive, is likely to be easier than implying consent for third party archiving. If somebody whose posts on a mailing list were to go and sue a third party archiver the answer would likely only be determined after some disproportionately expensive litigation that would end in tears for everybody except the lawyers. At least one mailing list owner that I know of stopped archiving and put a disclaimer on everything because of threatened lawsuits. Admittedly the list was of a personal nature, but sometimes personal things get said in flame wars - or copyright gets breached etc etc... so this goes beyond questions of permission to quote. It's a horror story awaiting a litigant with deep pockets. Is there any case law? -- SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html
Re: [SLUG] removing a custom kernel
Thanks Peter this is for the archive. # fdisk -l (to locate dev for root drive - assuming you can tell) # grub-mkdevicemap # dpkg-reconfigure grub-pc asks which drive to install on - see fdisk -l above I found this page: https://wiki.ubuntu.com/Grub2 which was quite helpful I'm assuming that dpkg-reconfigure runs # update-grub # grub-install /dev/sd? (in my case.. /dev/sdb) In any case, a check of /boot/grub/grub.cfg verified that the UUID matched the UUID listed in /etc/fstab for the root drive, so I took that as a good sign. All the scary error messages have vanished and the system boots correctly. Peter Chubb wrote: david == david da...@kenpro.com.au writes: david then I got this swag of errors. I've been googling madly but no david joy. david /dev/sdb1 (root drive) and /dev/sdc1 (unmounted backup) both david have boot directories. It leaves me somewhat nervous about david re-booting. Any suggestions? david thanks This sounds like grub2. I'm not much help there --- the config files are not documented, and the tools have near-useless man pages. There should however be a way to regenerate the device map that tells grub what BIOS drive number corresponds to which drive. I have no idea how to tell whether such a generated file is correct -- it seems that the BIOS drive numbers change around depending on what you tell SETUP, and how it chooses to scan the scsi, sata and IDE buses today. And how those numbers then map onto the grub numbers (hd0,n) is also magic. Try running grub-mkdevicemap before doing an apt-get -f install to rerun unconfigured bits and see if that helps. Check the /boot/grub/device.map file. It should contain something like (hd0) /dev/sdb (hd1) /dev/sdc assuming that you want to use /dev/sdb as the boot device. -- SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html
[SLUG] Adjusting volume on bluetooth headset
Hi folks, I've recently acquired a bluetooth headset capable of a2dp streaming. After a lot of mucking around I've managed to get it sort-of working with mplayer. But I can't wwork out how to adjust the volume. I do mplayer -ao alsa:device=bluetooth file.ogg and I get sound from the headset. But alsamixer doesn't see the mixer, and it's too loud. Mplayer's volume control says it has changed the volume, but it doesn't seem to make a difference --- even when mplayer reports 0% there's still lots of volume. And cat /proc/asound/devices shows only the on-board Intel sound card, not bluetooth. Any ideas? -- Dr Peter Chubb peter DOT chubb AT nicta.com.au http://www.ertos.nicta.com.au ERTOS within National ICT Australia All things shall perish from under the sky/Music alone shall live, never to die -- SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html
