Re: XO boot problem
Hi Daniel Thanks for the input. The XO is booting fine after the firmware update. I was looking for the bootfw.zip online, older released firmware versions have the bootfw.zip in this directory: http://dev.laptop.org/pub/firmware/q2e18/ But you are right, I can just copy the bootfw.zip from a working XO with build 767 installed. The ticket 7607 got fixed with q2e12 so it shouldn't happen with build 767 (q2e18) anymore. But I got the information that 3 XOs with build 767 had the same problem. They got fixed with a clean install, so no way for further diagnosis. Regards, Philipp Daniel Drake wrote: > 2009/3/10 Philipp Kocher : >> Hi, >> >> An other school in Cambodia has the problem that several XOs don't boot >> anymore. Some of the XOs have build 708 and other ones build 767 >> installed. All are in secure mode. >> With a dignostic startup the following information is last shown on the >> screen: >> OLPC C2, 256 MiB memory installed, S/N CSN75001163 >> OpenFirmware CL1 Q2D16 Q2D >> >> Nothing happens anymore afterwards. >> >> The OFW hardware diagnostic is still working. >> After a clean install the XO works fine again but all the data is lost. >> >> Has anyone a solution for that problem or input for further diagnosis? > > This is a common problem seen by several deployments: > http://dev.laptop.org/ticket/7607 > > It is caused when machines are shut down improperly - i.e. the child > holds the power button for 5secs to turn off the laptop, or all power > sources are removed (i.e. battery + AC connected, no AC and battery > runs to zero, etc), or if the XO hard-crashes and you are forced to > shut down uncleanly. > > The solution is to upgrade firmware to e.g. q2e18. > > While the firmware update will solve the immediate problem where > OpenFirmware crashes when minor corruption is encountered, unclean > shutdowns will lead to file corruption causing more, probably > less-obvious problems down the line. > >> I wanted to recommend a firmware update, but the file bootfw.zip is >> missing in the directory for the newer firmware releases (e.g. q2e18 for >> build 767): >> http://wiki.laptop.org/go/Upgrading_firmware#Steps_to_upgrade_firmware > > It sounds like you are not using 767, or have customized it somehow. > Official 767 already has q2e18 as /boot/bootfw.zip and if you boot > with AC connected it will upgrade you to q2e18. > Could you give the URL to the build that you are using? > > Daniel > ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
Re: XO boot problem
> While the firmware update will solve the immediate problem where > OpenFirmware crashes when minor corruption is encountered, unclean > shutdowns will lead to file corruption causing more, probably > less-obvious problems down the line. How solid is the jffs2 file system? If I remove power while writes are in progress, what are the chances of the whole file system getting trashed and/or just the file I'm working on getting trashed? (I'm happy if I get either the old or new file.) Are there other possibilities, like a directory getting trashed? If a program writes to a file, how long before the data buffered in memory gets pushed out to "disk"? Is there an fsck for jffs2? If something nasty happens to the file system on my XO, what are my chances of recovering any useful data? -- These are my opinions, not necessarily my employer's. I hate spam. ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
Re: XO boot problem
2009/3/10 Philipp Kocher : > Hi, > > An other school in Cambodia has the problem that several XOs don't boot > anymore. Some of the XOs have build 708 and other ones build 767 > installed. All are in secure mode. > With a dignostic startup the following information is last shown on the > screen: > OLPC C2, 256 MiB memory installed, S/N CSN75001163 > OpenFirmware CL1 Q2D16 Q2D > > Nothing happens anymore afterwards. > > The OFW hardware diagnostic is still working. > After a clean install the XO works fine again but all the data is lost. > > Has anyone a solution for that problem or input for further diagnosis? This is a common problem seen by several deployments: http://dev.laptop.org/ticket/7607 It is caused when machines are shut down improperly - i.e. the child holds the power button for 5secs to turn off the laptop, or all power sources are removed (i.e. battery + AC connected, no AC and battery runs to zero, etc), or if the XO hard-crashes and you are forced to shut down uncleanly. The solution is to upgrade firmware to e.g. q2e18. While the firmware update will solve the immediate problem where OpenFirmware crashes when minor corruption is encountered, unclean shutdowns will lead to file corruption causing more, probably less-obvious problems down the line. > I wanted to recommend a firmware update, but the file bootfw.zip is > missing in the directory for the newer firmware releases (e.g. q2e18 for > build 767): > http://wiki.laptop.org/go/Upgrading_firmware#Steps_to_upgrade_firmware It sounds like you are not using 767, or have customized it somehow. Official 767 already has q2e18 as /boot/bootfw.zip and if you boot with AC connected it will upgrade you to q2e18. Could you give the URL to the build that you are using? Daniel ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
XO boot problem
Hi, An other school in Cambodia has the problem that several XOs don't boot anymore. Some of the XOs have build 708 and other ones build 767 installed. All are in secure mode. With a dignostic startup the following information is last shown on the screen: OLPC C2, 256 MiB memory installed, S/N CSN75001163 OpenFirmware CL1 Q2D16 Q2D Nothing happens anymore afterwards. The OFW hardware diagnostic is still working. After a clean install the XO works fine again but all the data is lost. Has anyone a solution for that problem or input for further diagnosis? I wanted to recommend a firmware update, but the file bootfw.zip is missing in the directory for the newer firmware releases (e.g. q2e18 for build 767): http://wiki.laptop.org/go/Upgrading_firmware#Steps_to_upgrade_firmware Regards, Philipp Pepyride School Cambodia Original Message Subject: Re: XO boot problem Date: Mon, 09 Mar 2009 11:11:07 +0700 From: Channa To: Philipp Kocher References: <49aded40.5050...@gmx.net> <49adfbad.8020...@cambodiapride.org> <49adff27.8070...@gmx.net> Dear Philipp, I just got one more XO from the 8th grader that have problem with booting up, after I did the same as you mention (press the check button, the right one of the four buttons above the power button) on the white screen has this massage, OLPC C2, 256 MiB memory installed, S/N CSN75001163 OpenFirmware CL1 Q2D16 Q2D . And nothing happen after that. Best regards, Channa Philipp Kocher wrote: > Could you try to press the check button (the right one of the four > buttons above the power button) when turning on the XO? > See this website: > http://wiki.laptop.org/go/Startup_Diagnosis#Check-Key_Boot > > You should see more information when booting. What are the last lines? > > Regards, > Philipp > > Channa wrote: >> Dear Philipp, >> >> Thank you very much for trying to help. Yes, it's about 7 computers >> are from JHS and they have this problem, and these computers for 6th >> grader when you were here, but right now they are in 7th grader, and >> they are using build 708. And another 3 computers using by 8th >> grader with build 767, this build installed by Elijah at the >> beginning of the school year, he is a computer teacher there. And >> these problem we met last month but in different time. So as I told >> you I have no solution, even I tried to ran the hardware test the >> result everything is okay, but when I re-boot it again the computer >> play sound the same as normal (the sound when the XO start) but after >> that very soon it changed quickly to white screen and the XO in the >> meddle of the screen and nothing happen even we wait about 1 or 2 >> hours it still the same. Right now I had erased everything and put >> the old build 708 back for them even we don't know what problem is >> and I'm worry that it will be more computers have the same problem >> like this and I don't want to erase the student's project from their >> XO, if you can help with this problem it will be helpful. >> >> Again thank you for your help, >> >> Best regards, >> Channa >> >> >> >> Philipp Kocher wrote: >>> Hi Channa >>> >>> I can try to help you with your XO boot problem if you give me some >>> more information. >>> Please give me a detailed description of the problem. >>> >>> Here are some questions, but if you have more information which >>> might be relevant please add it. >>> What is the build number? >>> How many XOs are affected? >>> When did it start? >>> When did you install the new build? >>> Brake all XOs at the same time? >>> What do you see on the screen when the boot process stops? >>> Can you do the hardware test? >>> Are "new" XOs from the JHS affected as well? >>> >>> Regards, >>> Philipp >>> >> > ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
