Re: Re-install os885 on XO-1.5 error
* try a different USB drive, I wore out a USB drive, just by downloading new versions of XO-1.0 software to try. (Kingston, 2GB) copy-nand complained. I forget the exact error message, but it was obvious after I compared the bits on the USB drive against the bits on the disk. Many thanks for the CRC checking part of copy-nand. I still have the busted USB drive if anybody wants one that is just-flakey-enough for testing. -- These are my opinions. I hate spam. ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
Re: Re-install os885 on XO-1.5 error
Good to hear. USB flash drives can be unreliable. There are so many things that can go wrong. On Thu, Jun 13, 2013 at 04:28:48PM +1100, David Leeming wrote: Thanks again James. The md5sum was OK so I reformatted the USB stick and tried again - and no error. I have done this so many times before on XO-1 but never seen this. So the first time I tried on XO 1.5 it happened. I must remember the old adage, if the car doesn't start maybe it has no petrol... David -Original Message- From: qu...@us.netrek.org [mailto:qu...@us.netrek.org] On Behalf Of James Cameron Sent: Thursday, 13 June 2013 3:47 p.m. To: David Leeming Cc: 'OLPC Devel' Subject: Re: Re-install os885 on XO-1.5 error G'day David, The CPU temperature of 54 celcius is a bit on the high side. Please run the heat spreader test on this unit: ok test /switches If the heat spreader does not contact the CPU properly, the temperature can rise too much during installation. If the temperature is too high, the CPU can pause, or make mistakes. Significant gaps, blocks staying gray, are normal, and nothing to worry about. These blocks don't need to be written, so the .zd file does not write to them. This saves on downloads. The error Wrong expanded data length means that the file was not correct on the USB drive, or the USB drive could not be read. The task was aborted. Things you can try: * check the file using md5sum, see http://wiki.laptop.org/go/Download#Verifying * try a different USB drive, * don't use a USB hub, * disconnect any other USB devices, * try a different port on the laptop, * upgrade the firmware; you are using Q3C07, but Q3C08 contains a fix for USB drives with embedded hubs, and Q3C13 has a fix for USB drives with unusual partitioning. Q3C15 is the latest version. That the XO starts up OK afterwards is not a valid test, since it would likely have the same build already installed. No logs are kept of firmware operations, so you won't find any evidence; you have to repeat the problem and gather data that way. -- James Cameron http://quozl.linux.org.au/ -- James Cameron http://quozl.linux.org.au/ ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
Re: Re-install os885 on XO-1.5 error
I'm a bit interested. I haven't been able to make any of mine fail, and I've a collection of about twelve so far, accumulated over ten years. I've always found my problems to be either: - invalid partitioning, - unrepeatable corruption of the partition table or filesystem, or; - physical wear on the connectors, - plastic dimensions that prevent full insertion. On Wed, Jun 12, 2013 at 11:03:20PM -0700, Hal Murray wrote: * try a different USB drive, I wore out a USB drive, just by downloading new versions of XO-1.0 software to try. (Kingston, 2GB) copy-nand complained. I forget the exact error message, but it was obvious after I compared the bits on the USB drive against the bits on the disk. Many thanks for the CRC checking part of copy-nand. I still have the busted USB drive if anybody wants one that is just-flakey-enough for testing. -- These are my opinions. I hate spam. ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel -- James Cameron http://quozl.linux.org.au/ ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
Re: Re-install os885 on XO-1.5 error
G'day David, The CPU temperature of 54 celcius is a bit on the high side. Please run the heat spreader test on this unit: ok test /switches If the heat spreader does not contact the CPU properly, the temperature can rise too much during installation. If the temperature is too high, the CPU can pause, or make mistakes. Significant gaps, blocks staying gray, are normal, and nothing to worry about. These blocks don't need to be written, so the .zd file does not write to them. This saves on downloads. The error Wrong expanded data length means that the file was not correct on the USB drive, or the USB drive could not be read. The task was aborted. Things you can try: * check the file using md5sum, see http://wiki.laptop.org/go/Download#Verifying * try a different USB drive, * don't use a USB hub, * disconnect any other USB devices, * try a different port on the laptop, * upgrade the firmware; you are using Q3C07, but Q3C08 contains a fix for USB drives with embedded hubs, and Q3C13 has a fix for USB drives with unusual partitioning. Q3C15 is the latest version. That the XO starts up OK afterwards is not a valid test, since it would likely have the same build already installed. No logs are kept of firmware operations, so you won't find any evidence; you have to repeat the problem and gather data that way. -- James Cameron http://quozl.linux.org.au/ ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
RE: Re-install os885 on XO-1.5 error
Thanks again James. The md5sum was OK so I reformatted the USB stick and tried again - and no error. I have done this so many times before on XO-1 but never seen this. So the first time I tried on XO 1.5 it happened. I must remember the old adage, if the car doesn't start maybe it has no petrol... David -Original Message- From: qu...@us.netrek.org [mailto:qu...@us.netrek.org] On Behalf Of James Cameron Sent: Thursday, 13 June 2013 3:47 p.m. To: David Leeming Cc: 'OLPC Devel' Subject: Re: Re-install os885 on XO-1.5 error G'day David, The CPU temperature of 54 celcius is a bit on the high side. Please run the heat spreader test on this unit: ok test /switches If the heat spreader does not contact the CPU properly, the temperature can rise too much during installation. If the temperature is too high, the CPU can pause, or make mistakes. Significant gaps, blocks staying gray, are normal, and nothing to worry about. These blocks don't need to be written, so the .zd file does not write to them. This saves on downloads. The error Wrong expanded data length means that the file was not correct on the USB drive, or the USB drive could not be read. The task was aborted. Things you can try: * check the file using md5sum, see http://wiki.laptop.org/go/Download#Verifying * try a different USB drive, * don't use a USB hub, * disconnect any other USB devices, * try a different port on the laptop, * upgrade the firmware; you are using Q3C07, but Q3C08 contains a fix for USB drives with embedded hubs, and Q3C13 has a fix for USB drives with unusual partitioning. Q3C15 is the latest version. That the XO starts up OK afterwards is not a valid test, since it would likely have the same build already installed. No logs are kept of firmware operations, so you won't find any evidence; you have to repeat the problem and gather data that way. -- James Cameron http://quozl.linux.org.au/ ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
