Ready-made kernel, XO-1, Xubuntu, and initrd questions
Hi! I have a G1G1-era XO-1 and am trying to put Xubuntu onto it, using Virtualbox to do the setup and build on OSX, and then dd'ing the raw image to a 4Gb SD-card for booting. I'm using the current Xubuntu-alternate CD to build the image, and then approximately following the Wiki at http://wiki.laptop.org/go/Ubuntu_Lucid_on_OLPC_XO regards getting a kernel installed. At first I used the wiki instructions to pick a kernel from http://dev.laptop.org/~kernels/olpc-2.6.31-xo1/ - from this directory I chose: vmlinuz-2.6.35_xo1-20100827.0009.1.olpc.e8a1b0f901cd2b3 ...and following the instructions got my XO1 to boot successfully to a GUI login, but it would be unusable because during boot it would complain about not finding /lib/modules/VERSION+ - with a trailing + character - and thereby could not get at trackpad or usb-mouse drivers. I checked this with Chris Ball and he said that the + represented a dirty kernel tree, which makes sense - but means that the wiki instructions won't work for initrd building, since the /lib/modules/VERSION directory won't match the kernels VERSION+ build. This also made me think I was barking up the wrong tree; so I tried a different directory: http://dev.laptop.org/~kernels/public_rpms/f14-xo1/ ...and installing the most recent kernel from _that_ actually provides me with a initrd-image file ... except that the initrd is incomplete and booting it causes /lib/modules: no such file or directory ...and my attempts to reconstruct a initrd _for_ that kernel have been klunky failures. So at Chris' suggestion, I thought I would ask: Is there a place I can get a ready-made kernel which contains all the necessary XO1 drivers and a working initrd, or at lease an initrd which can be poked trivially to make it work for Xubuntu, please? Ideally I am looking to use the XO for wireless geomapping research, so promisc-mode drivers and a loadable bluetooth-dongle stack are desirable features. :-) [I promise to document the build once I get it running.] Many thanks! -a ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
Re: Ready-made kernel, XO-1, Xubuntu, and initrd questions
On Sat, Nov 26, 2011 at 11:40:21AM +, Alec Muffett wrote: I have a G1G1-era XO-1 and am trying to put Xubuntu onto it, using Virtualbox to do the setup and build on OSX, and then dd'ing the raw image to a 4Gb SD-card for booting. I'm using the current Xubuntu-alternate CD to build the image, and then approximately following the Wiki at http://wiki.laptop.org/go/Ubuntu_Lucid_on_OLPC_XO regards getting a kernel installed. I never really liked that method, because it was imaging an existing installation over to an XO from a virtual machine ... seemed difficult to reproduce in an automated fashion. So I wrote my own scripts in September last year that built a filesystem using debootstrap: git://dev.laptop.org/users/quozl/uxo This used two kernels, one for XO-1, one for XO-1.5, with an olpc.fth that decided between them. The initrd was included and worked fine. default.conf is where the kernels are specified. C_KERNEL=2.6.31_xo1-20110320.1409.1.olpc.3d8536c28d6c5a1 C_KERNEL_ORIGIN=http://dev.laptop.org/~kernels/olpc-2.6.31-xo1 D_KERNEL=2.6.31_xo1.5-20110320.1401.1.olpc.3d8536c28d6c5a1 D_KERNEL_ORIGIN=http://dev.laptop.org/~kernels/olpc-2.6.31 However, I only ever booted from USB on XO-1. The initrd might not have liked the SD card slot. -- James Cameron http://quozl.linux.org.au/ ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
Raspberry Pi as development platform for XO-1.75
How useful could a Raspberry Pi be as a development platform for the XO-1.75? It looks like the Pi is ARM11 based (v6 arch) and the XO has a v7 arch. Sridhar Dhanapalan Engineering Manager One Laptop per Child Australia ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
Re: Raspberry Pi as development platform for XO-1.75
Hi, On Sat, Nov 26 2011, Sridhar Dhanapalan wrote: How useful could a Raspberry Pi be as a development platform for the XO-1.75? It looks like the Pi is ARM11 based (v6 arch) and the XO has a v7 arch. You've correctly described why it probably won't be useful -- almost every distribution compiles for ARMv7, including Fedora and Ubuntu, so our builds won't boot on it at all. Since you can create ARM binaries on an x86 machine with a cross compiler, or on the 1.75 itself, the only use case I can think of for it relating to 1.75 development would have been running our builds. - Chris. -- Chris Ball c...@laptop.org http://printf.net/ One Laptop Per Child ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
Battery - small irritation
Hi: I have received a new XO 1.5, shipped with a battery S/N starting with 008. Over the past few days, I've noticed something a tad strange. No matter how long it's plugged in, the little charging LED stays yellow. However, the frame battery indicator says 100% Moved this battery to another XO 1.5 machine and plugged in, same symptoms, stays yellow forever. Moved this battery to an XO 1.0 - same, LED stays yellow forever. Moved this battery to an XO 1.75 - same, LED stays yellow forever. All my other batteries charge to green just fine in the original XO 1.5, and in all the other machines listed above. The battery seems to be performing normally, but as I said in the subject, it's a small irritation, that it never seems to 'go green'. KG ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
Re: Ready-made kernel, XO-1, Xubuntu, and initrd questions [Devel Digest, Vol 69, Issue 60]
-- Message: 2 Date: Sat, 26 Nov 2011 11:40:21 + From: Alec Muffett alec.muff...@gmail.com To: devel@lists.laptop.org Subject: Ready-made kernel, XO-1, Xubuntu, and initrd questions Message-ID: CAFWeb9+LRRDXy=jtfvybnhsp19c_mre5ognj3r0sdvdfued...@mail.gmail.com Content-Type: text/plain; charset=ISO-8859-1 Hi! I have a G1G1-era XO-1 and am trying to put Xubuntu onto it, using Virtualbox to do the setup and build on OSX, and then dd'ing the raw image to a 4Gb SD-card for booting. I'm using the current Xubuntu-alternate CD to build the image, and then approximately following the Wiki at http://wiki.laptop.org/go/Ubuntu_Lucid_on_OLPC_XO regards getting a kernel installed. At first I used the wiki instructions to pick a kernel from http://dev.laptop.org/~kernels/olpc-2.6.31-xo1/ - from this directory I chose: vmlinuz-2.6.35_xo1-20100827.0009.1.olpc.e8a1b0f901cd2b3 Did you get _only_ the vmlinuz from the kernel rpm :-? ...and following the instructions got my XO1 to boot successfully to a GUI login, but it would be unusable because during boot it would complain about not finding /lib/modules/VERSION+ - with a trailing + character - and thereby could not get at trackpad or usb-mouse drivers. You only get VERSION+ if you _build_ the kernel from a dirty tree source, not when you rpm2cpio an official kernel rpm (as the wiki instructions suggest). If you are building the kernel and you use the vmlinuz from the official kernel rpm, you can remove the + by typing, while in the kernel source dir and before you build the kernel: sed -rie 's/echo \+/#echo \+/' scripts/setlocalversion ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
Re: Battery - small irritation
On Sat, Nov 26, 2011 at 11:24 AM, Kevin Gordon kgordon...@gmail.com wrote: Hi: I have received a new XO 1.5, shipped with a battery S/N starting with 008. Over the past few days, I've noticed something a tad strange. No matter how long it's plugged in, the little charging LED stays yellow. However, the frame battery indicator says 100% The full stop condition for battery charged is when the constant voltage taper current drops below .12. I suspect you have some sort of cell defect that keeping the taper current above that. Next time you are using the machine stop powerd and run olpc-pwr-log in a terminal (you can use it normally) and let it run down until it powers off. Then remove the battery, power back up, run olpc-pwr-log again and then re-insert the battery. Let it charge until you see the got to 100 and the 3rd and 4th column of numbers reach some sort of steady state where they don't change much. Ctrl-C and then send me the file. FYI. Col 3 is voltage in uV and col 4 is amperage in uA. Also send me all the files you have in ~olpc/power-logs Thanks. -- Richard A. Smith One Laptop per Child ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
