<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML><HEAD> <META http-equiv=Content-Type content="text/html; charset=iso-8859-1"> <META content="MSHTML 6.00.6002.18686" name=GENERATOR> <STYLE></STYLE> </HEAD> <BODY bgColor=#ffffff> <DIV><FONT face=Arial size=2>working:</FONT></DIV> <DIV><FONT face=Arial size=2></FONT> </DIV> <DIV><FONT face=Arial size=2>shf 807019B9</FONT></DIV> <DIV><FONT face=Arial size=2>csn 74903342</FONT></DIV> <DIV><FONT face=Arial size=2></FONT> </DIV> <DIV><FONT face=Arial size=2>notworking:</FONT></DIV> <DIV><FONT face=Arial size=2></FONT> </DIV> <DIV><FONT face=Arial size=2>shc 84600167</FONT></DIV> <DIV><FONT face=Arial size=2>shc 846000B4</FONT></DIV> <DIV> <P style="MARGIN-BOTTOM: 0cm"><FONT face="Arial, sans-serif"><FONT size=2>---------------- <BR><BR>Dominik Granada<BR>Prezes Zarządu<BR><A href="http://www.FRKS.pl">www.FRKS.pl</A><BR><BR>Tel.: 22 545 05 11<BR>Fax.: 22 545 05 10<BR></FONT></FONT>----- Wiadomość oryginalna ----- </P></DIV> <BLOCKQUOTE style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px"> <DIV style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>Od:</B> <A title=quozl@laptop.org href="mailto:quozl@laptop.org">James Cameron</A> </DIV> <DIV style="FONT: 10pt arial"><B>Do:</B> <A title=support-gang@lists.laptop.org href="mailto:support-gang@lists.laptop.org">Community Support Volunteers -- who help respond to "help ATlaptop.org"</A> </DIV> <DIV style="FONT: 10pt arial"><B>DW:</B> <A title=sugar-devel@lists.sugarlabs.org href="mailto:sugar-devel@lists.sugarlabs.org">sugar-devel@lists.sugarlabs.org</A> ; <A title=Mateusz.Chmielewski@support-online.pl href="mailto:Mateusz.Chmielewski@support-online.pl">Chmielewski Mateusz</A> </DIV> <DIV style="FONT: 10pt arial"><B>Wysłano:</B> 5 grudnia 2012 10:49</DIV> <DIV style="FONT: 10pt arial"><B>Temat:</B> Re: [support-gang] Overclocking XO / General Protection Exeption</DIV> <DIV><BR></DIV>Must be a different batch of processors or something. Can you give us<BR>some serial numbers and SKU numbers of the working and non-working<BR>batch so that we can compare? You can find these under the battery.<BR><BR>For XO-1, they were only tested in factory at 433/166. If they passed<BR>that, they shipped.<BR><BR>On Wed, Dec 05, 2012 at 10:16:56AM +0100, Dominik Granada wrote:<BR>> Guys I need help / advice,<BR>> <BR>> I have a problem with "General Protection Exception" on XO 1 it seems to be<BR>> related to overclocking:<BR>> <BR>> We have 30 XO from Peter (UK firends of OLPC) - no problem with those, after<BR>> introducing DevKey and disabling-security we can flash XO with our version of<BR>> Dex3/143 that includes overclocking and it works.<BR>> <BR>> Surprisingly 10 XO we got thanks to Urs from OLPC Switzerland after flashing -<BR>> crash with "General Protection Exception" notice. It seems to be related to<BR>> overclocking. (as once turned off all works fine)<BR>> <BR>> Any idea whether there is some more security we can turn off? (apart form<BR>> Devkey / disable-security)<BR>> <BR>> below info from my IT team:<BR>> <BR>> when adding commands from ok prompt:<BR>> ok 4c000014<BR>> ok rdmsr<BR>> ok u.<BR>> ok u.<BR>> ok 65d<BR>> ok wrmsr<BR>> ok boot<BR>> works overclocked fine<BR>> but adding a line:<BR>> <BR>> 7de009e 65d 4c000014 wrmsr<BR>> to file /boot/olpc.fth<BR>> makes our image crash. Boot from separate olpc.fth file from usb doesn not work<BR>> either. It works only when clock set to 433/166<BR>> Many thanks for any hints / advice<BR>> DG<BR>> <BR>> <BR>> ----------------<BR>> <BR>> Dominik Granada<BR>> Prezes Zarz?du<BR>> <A href="http://www.FRKS.pl">www.FRKS.pl</A><BR>> <BR>> Tel.: 22 545 05 11<BR>> Fax.: 22 545 05 10<BR>> <BR><BR>> _______________________________________________<BR>> support-gang mailing list<BR>> <A href="mailto:support-gang@lists.laptop.org">support-gang@lists.laptop.org</A><BR>> <A href="http://lists.laptop.org/listinfo/support-gang">http://lists.laptop.org/listinfo/support-gang</A><BR><BR><BR>-- <BR>James Cameron<BR><A href="http://quozl.linux.org.au/">http://quozl.linux.org.au/</A><BR>_______________________________________________<BR>support-gang mailing list<BR><A href="mailto:support-gang@lists.laptop.org">support-gang@lists.laptop.org</A><BR><A href="http://lists.laptop.org/listinfo/support-gang">http://lists.laptop.org/listinfo/support-gang</A></BLOCKQUOTE></BODY></HTML>