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Re: Latest generation laptops with Windows 8 preinstalled, EFI mess..
by Roger 13 Dec '12

13 Dec '12

On 12/13/2012 10:41 AM, Sam Varghese wrote: > On Thu, Dec 13, 2012 at 10:00:01AM +1100, Jesse Stevens wrote: >> Hey people, >> >> We're looking at replacing an aging workhorse Samsung laptop we use >> for lots of video transcoding with Ubuntu and occasionally having to >> boot into Windows 7 for some ugly BrightAuthor usage. >> >> We want to get one of the new Alienware M14x laptops but it appears >> most come preinstalled with Windows 8 when buying them off the shelf. >> >> I remember a while back people talking about secure booting and EFI >> madness. Does anyone have any information that might help inform this >> decision as ideally we'd install Ubuntu the moment we bought the >> laptop, and occasionally still dual boot over to Windows. We may >> change and start to use VirtualBox in future but for now this is the >> ideal setup. >> >> Does anyone know if simply by coming preloaded with Windows 8 this >> causes problems with installing Ubuntu and Grub? I've googled of >> course but I'm looking for real world experience answers rather than >> links. Especially if anyone has this particular laptop... >> >> It's so boring having to think about Windows at all these days.. > I've seen one case [1] of a Ubuntu/Win 8 dual-boot on a Lenovo laptop; whether > this install was done as ordinary mortals do is not clear. > > >From my personal experience, you can only have Windows 8 and Ubuntu on the same > machine on separate drives [2]. This install was done in the bog standard way. > > Sam > --- > (Sam Varghese) > Frankly that is how I would do it, 2 separate drives. It's arguably more cumbersome but when windows fails you still have a working laptop. Roger

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Re: Latest generation laptops with Windows 8 preinstalled, EFI mess..
by Peter Ross 13 Dec '12

13 Dec '12

Hi Sam, just as a disclaimer: I did not test any Windows 8 boot process yet so it is all "mind games" based on my understanding, after reading a bit here and there - hopefully the right bits and nothing misleading. On Thu, 13 Dec 2012, Sam Varghese wrote: > From my personal experience, you can only have Windows 8 and Ubuntu on the same > machine on separate drives [2]. This install was done in the bog standard way. > > [2] > http://www.itwire.com/opinion-and-analysis/open-sauce/57822-ubuntu-1210-and… "But you cannot install Ubuntu 12.10 64-bit on a Windows 8 secure boot machine which has a single hard drive." That makes sense, if you tell your machine to boot just what is signed, you cannot slip in a boot loader the machine does not know. So working as expected? Well, obviously there are ways around it, e.g. if the Windows 8 boot loader allows you to boot another OS from another partition. Former versions could, and it looks as it is still there. Hyper-V may give you another way to break free.. Anyway, you describe how to switch on the secure boot in the UEFI BIOS. http://www.itwire.com/opinion-and-analysis/open-sauce/57562-installing-wind… Just turn it off and install Ubuntu as usual? BTW: Can you still boot the Windows 8 installed with secure boot? (Obviously not the other way around, turning on secure boot broke the Windows 8 installed without secure boot, as you wrote). I find it odd that there seemed to be no way to put a key in manually. E.g. create a key, sign your new kernel with it, boot into UEFI BIOS and hammer it in. If it is a place which is read-only outside the UEFI setup, it should be safe and serve the purpose: Don't let me boot a kernel I did not want on my machine. Or did I overlook something? Regards Peter

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Re: Latest generation laptops with Windows 8 preinstalled, EFI mess..
by Rick Moen 13 Dec '12

13 Dec '12

Quoting Sam Varghese (sam(a)gnubies.com) > From my personal experience, you can only have Windows 8 and Ubuntu on > the same machine on separate drives [2]. This install was done in the > bog standard way. Sam, here's one guy who did a relatively straightforward installation on a _single_ drive (starting with an empty hard drive) of MS-Windows 8 into its own partition, then Linux (Ubuntu 12.10 - no accounting for taste) into _its_ own partitions, and then letting MS-Windows handle the early stages of booting, chain-booting to GRUB in /dev/sda3 when booting Linux, with MS-Windows getting help from a proprietary booting-management program for MS-Windows called EasyBCD: http://www.linuxbsdos.com/2012/11/05/dual-boot-windows-8-and-ubuntu-12-10-o… Seems a shame to feel obliged to surrender control over booting to Microsoft. I'm not sure that part's obligatory. I would actually think it's a whole lot smarter to install Linux as the primary OS with custody of the entire drive and then install MS-Windows 8 inside a virtual machine (VirtualBox, VMware, whatever). http://www.labnol.org/software/install-windows-8-as-virtual-machine/20919/

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Program cssdups
by Robert Parker 11 Dec '12

11 Dec '12

A couple of days ago a friend of mine who is seriously into web page and html5 application development was complaining that none of the CSS validators he has been using report on duplicated style names. Some such duplication will ruin the rendering of the html in the browser. So I wrote a small program in C to find these duplicated style names. It is available here: https://github.com/rlp1938/Cssdups Not all duplicated names are faults, for example you may have several '@font-family' specifications in CSS. I have provided options to record style names which may be safely duplicated so these will not be reported. That recording may be done globally or per user as required. All that's needed after download is enter the directory Cssdups and 'make && sudo make install && make clean' When you find something better just enter the same dir and 'make remove' to remove the program, man page and config files. Bob Parker -- The healthy eating pyramid as published by the USDA and it's satellites all over the world is purposely designed to bring about an epidemic of obesity, hypertension and diabetes. It is wildly successful in this aim.

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btrfs snapshot backup management
by Russell Coker 10 Dec '12

10 Dec '12

http://en.wikipedia.org/wiki/Backup_rotation_scheme Does anyone know of a good script for managing btrfs snapshots for different frequencies of backups? Something like grandfather-father-son or tower of hanoi would do. Here's the long form: To cover the fumble-fingers case of backups (as opposed to hardware failure/theft) I want to have automatically managed btrfs snapshots. I was thinking of something like every 15 minutes for the last 24 hours, every 8 hours for the previous 30 days, and every day for the 100 days before that. Note that this schedule won't necessarily be the best for me (every 15 minutes for the last hour would do for me) but I'm dealing with users who won't necessarily call me quickly when they do the wrong thing and it's probably best to use the same configuration for everyone. Anyway this will end up being something like 96+90+100==286 snapshots at any time. I don't expect btrfs to have any problem handling this as the systems in question will mostly be used for Chromium, LibreOffice, and email. I expect that there will be some performance overhead and a definite space overhead, but nothing that a 120G SSD with a single active user can't cope with. The problem for me is managing it. I'm sure that I could write my own scripts to do this, but I'm concerned about bugs. I'd rather use someone else's script that has been tested and works at least some of the time. ;) -- My Main Blog http://etbe.coker.com.au/ My Documents Blog http://doc.coker.com.au/

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Re: Android keyboard to Linux
by Toby Corkindale 07 Dec '12

07 Dec '12

Thanks, that sounds like it should do the trick, at least in X. "Hiddensoul (Mark Clohesy)" <hiddensoul(a)twistedsouls.com> wrote: > > > > >On Thu, Dec 6, 2012 at 5:23 PM, Toby Corkindale <tobyc(a)strategicdata.com.au> wrote: > >Hi, >Is anyone aware of an app that will let you type on an Android device's on-screen keyboard and send the keystrokes to a Linux box via an HID device? >(ie. So X etc sees the input.) > > >Not quite what you want but Valence connects to a PC via VNC, it doesn't display the host PC screen just a keyboard and touch pad, works with any PC Linux, Win or Mac that is running a VNC server, market link is > > >https://play.google.com/store/apps/details?id=com.cafbit.valence > > >It is what I use at home to drive a debian machine when I am kicking back watching movies etc and use it as a remote control > > >hope that helps you out > > > >Mark "Pockets" Clohesy > >Mob Phone: (+61) 406 417 877 >Email: hiddensoul(a)twistedsouls.com >G-Talk: mark.clohesy(a)gmail.com >- >GNU/Linux.. > >Linux Counter #457297 > >"I would love to change the world, but they won't give me the source code" > >"Linux is user friendly...its just selective about who its friends are" > >"Never underestimate the bandwidth of a V8 station wagon full of tapes hurtling down the highway" > >"The difference between e-mail and regular mail is that computers handle e-mail, and computers never decide to come to work one day and shoot all the other computers" > > > >

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postfix config to deliver to local users only
by Marcus Furlong 06 Dec '12

06 Dec '12

Hi, My postfix-fu is failing me on this one. I am trying to set up postfix so that it only delivers to local users. The local users can exist in /etc/aliases or in the ldap-aliases postmap. However, the resolved email addresses in ldap can be from many different domains so I cannot filter by domain. All non-deliverable mail should either be discarded (via the postfix discard agent) or sent to a catch-all devnull address (e.g. devnull: /dev/null in /etc/aliases) I previously had this working with sendmail but I cannot seem to replicate this with postfix. I have tried transport maps /etc/postfix/transport domain.tld local: * discard: but this discards the ldap-resolved recipient address if it is outside the domain domain.tld (which most are). I have also tried with e.g. luser_relay = devnull@localhost without luck. Any other ideas? Thanks, Marcus. -- Marcus Furlong

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HDMI to VGA converter for Tuesday nights meeting?
by Chris Samuel 02 Dec '12

02 Dec '12

Hi folks, I'm doing a talk on Tuesday night but my laptop only has HDMI out, which means I can't connect it to VGA only projectors without an active converter. Does anyone have such a HDMI->VGA converter that they can bring along please? If not I'll have the talk on a USB stick just in case.. ;-) cheers, Chris -- Chris Samuel : http://www.csamuel.org/ : Melbourne, VIC

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Fwd: Gnome-shell very slow on boot
by Aryan Ameri 01 Dec '12

01 Dec '12

On Thu, Nov 22, 2012 at 12:15 AM, Daniel Dalton <d.dalton(a)iinet.net.au>wrote: > > I'm running debian testing with gnome 3.4. > > The first time I start my GUI on a particular boot be it at boot up via > gdm, invoking the gdm init script manually by hand after logging into > the console or by using startx it takes an incredibly long time for the > gnome-shell to load and become ready. > Yeah Gnome-shell is not quick at startup, but nowhere that slow. I'm running Gnome 3.6 in Ubuntu 12.10 and it does take longer to load (more than Unity and KDE 4.9) but not by a large margin. > I have auto-log in enabled and it takes about 50-60 seconds from the point > I start gdm or startx until the gui is ready to use. > I'm using a core I5 2.4 GHZ machine with 4 GB of ram so there is a bit > of power. > Are you using a machanical hard disk? If yes, that has much more to do with the speed of loading things than your CPU and RAM. Throw in a SSD in there and you'll be amazed by the difference. On my 3.5 year old Phenom II box but with a SSD, gdm + gnome-shell barely take 15 seconds to completely load. Cheers -- Aryan

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strange NTP problem
by Russell Coker 01 Dec '12

01 Dec '12

# ntpq ntpq> lpeer remote refid st t when poll reach delay offset jitter ============================================================================== foo 98.143.152.5 3 - 83d 1024 0 47.125 4.906 0.000 10.1.2.3 116.66.160.39 3 - 83d 1024 0 50.747 -2.829 0.000 resolv.internod 210.9.192.50 2 - 83d 1024 0 29.030 -3.233 0.000 The NTP server in my home stopped working, the above is what I saw when I queried it. Why would this happen? I don't think it was non-functional for 83 days, but then I don't generally check it that often and the system had 98 days of uptime. I've just rebooted it (so debugging the process state won't be possible). There was a new kernel to install. -- My Main Blog http://etbe.coker.com.au/ My Documents Blog http://doc.coker.com.au/

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