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RichardBronosky
PostPosted: Sat Jun 30, 2007 7:07 pm 
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Joined: Tue Aug 16, 2005 11:50 am
Posts: 181
Location: Douglasville, GA
This all started when I downloaded the MythDora DVD iso 3 times (1012MB) trying to get the sha1sum to match! After the 3rd time I decided to check up on sha1sum as the problem. It seems that both md5sum and sha1sum are producing semi-random results. after a few cycles, it gets consistant, but summing a different file often seems to start the random results again. What could cause this? I'm going to pull the RAM DIMMs and test them individually with memtest86. I'll follow up. I'd love to hear feedback, even if it is like "That's crazy. I've never seen anything like it."

Code:
bruno@mythtv:/myth/backup/.personal$ md5sum KnoppMythR5F1.iso       
69c9c209394643519bca5cdce8ee8b84  KnoppMythR5F1.iso
bruno@mythtv:/myth/backup/.personal$ md5sum KnoppMythR5F1.iso
7775356585b5952bf46a3a7bc94e17d7  KnoppMythR5F1.iso
bruno@mythtv:/myth/backup/.personal$ md5sum KnoppMythR5F1.iso
7775356585b5952bf46a3a7bc94e17d7  KnoppMythR5F1.iso
bruno@mythtv:/myth/backup/.personal$ md5sum KnoppMythR5F1.iso
7775356585b5952bf46a3a7bc94e17d7  KnoppMythR5F1.iso

bruno@mythtv:/myth/backup/.personal$ sha1sum KnoppMythR5F1.iso
^[[Ab70890c27cc60b5d336744a911c7118c9953d013  KnoppMythR5F1.iso
bruno@mythtv:/myth/backup/.personal$ sha1sum KnoppMythR5F1.iso
1169a6345842db99b3a941f91bbde95dc4e03315  KnoppMythR5F1.iso
bruno@mythtv:/myth/backup/.personal$ sha1sum KnoppMythR5F1.iso
1169a6345842db99b3a941f91bbde95dc4e03315  KnoppMythR5F1.iso
bruno@mythtv:/myth/backup/.personal$ sha1sum KnoppMythR5F1.iso
1169a6345842db99b3a941f91bbde95dc4e03315  KnoppMythR5F1.iso
bruno@mythtv:/myth/backup/.personal$ sha1sum /etc/hosts
6e2b2eea79d51cf8e10440d444e5db08eb7c3545  /etc/hosts
bruno@mythtv:/myth/backup/.personal$ sha1sum KnoppMythR5F1.iso
40dcadc72e869c86fefa0d3f77dba93377ba020f  KnoppMythR5F1.iso
bruno@mythtv:/myth/backup/.personal$ sha1sum KnoppMythR5F1.iso
4d4e9fd2115ab8e4aaaf0547449fdf1056266ab5  KnoppMythR5F1.iso
bruno@mythtv:/myth/backup/.personal$ sha1sum KnoppMythR5F1.iso
56900252c36beba729c4115e68cc9cfdc3fac59a  KnoppMythR5F1.iso
bruno@mythtv:/myth/backup/.personal$ sha1sum KnoppMythR5F1.iso
56900252c36beba729c4115e68cc9cfdc3fac59a  KnoppMythR5F1.iso
bruno@mythtv:/myth/backup/.personal$ sha1sum KnoppMythR5F1.iso
56900252c36beba729c4115e68cc9cfdc3fac59a  KnoppMythR5F1.iso
bruno@mythtv:/myth/backup/.personal$ sha1sum /etc/hosts
6e2b2eea79d51cf8e10440d444e5db08eb7c3545  /etc/hosts
bruno@mythtv:/myth/backup/.personal$ sha1sum KnoppMythR5F1.iso
56900252c36beba729c4115e68cc9cfdc3fac59a  KnoppMythR5F1.iso
bruno@mythtv:/myth/backup/.personal$ sha1sum /usr/local/share/knoppmyth/ivtv.350
bfbbde0d705f3d0914d4309d4c44375682e946ef  /usr/local/share/knoppmyth/ivtv.350
bruno@mythtv:/myth/backup/.personal$ sha1sum KnoppMythR5F1.iso
44b74c84455cd7c82f3cb30d2d6cf5c3d23f20e4  KnoppMythR5F1.iso


bruno@mythtv:/myth/backup/.personal$ md5sum MythDora-4.0-i386-DVD.iso
1c8505083cc438e9d56d917545505afa  MythDora-4.0-i386-DVD.iso
bruno@mythtv:/myth/backup/.personal$ md5sum MythDora-4.0-i386-DVD.iso
e8e2067fa9ff981367a4f3c720a79cb6  MythDora-4.0-i386-DVD.iso
bruno@mythtv:/myth/backup/.personal$ md5sum MythDora-4.0-i386-DVD.iso
e8e2067fa9ff981367a4f3c720a79cb6  MythDora-4.0-i386-DVD.iso
bruno@mythtv:/myth/backup/.personal$ md5sum MythDora-4.0-i386-DVD.iso
c5b6ebedb59dd6cca9035e177240941f  MythDora-4.0-i386-DVD.iso
bruno@mythtv:/myth/backup/.personal$ md5sum MythDora-4.0-i386-DVD.iso
c5b6ebedb59dd6cca9035e177240941f  MythDora-4.0-i386-DVD.iso

bruno@mythtv:/myth/backup/.personal$ sha1sum MythDora-4.0-i386-DVD.iso
e00eb53b90f41e4df3c44bdce03ccc844c8e8b30  MythDora-4.0-i386-DVD.iso
bruno@mythtv:/myth/backup/.personal$ sha1sum MythDora-4.0-i386-DVD.iso
584d43951245e77a7f1af5083a8f95e5c43cce94  MythDora-4.0-i386-DVD.iso
bruno@mythtv:/myth/backup/.personal$ sha1sum MythDora-4.0-i386-DVD.iso
2a30d426f8d08d9a3dbcd9985534511e87799ce1  MythDora-4.0-i386-DVD.iso
bruno@mythtv:/myth/backup/.personal$ sha1sum MythDora-4.0-i386-DVD.iso
2a30d426f8d08d9a3dbcd9985534511e87799ce1  MythDora-4.0-i386-DVD.iso
bruno@mythtv:/myth/backup/.personal$ sha1sum MythDora-4.0-i386-DVD.iso
2a30d426f8d08d9a3dbcd9985534511e87799ce1  MythDora-4.0-i386-DVD.iso
[/code]

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LOL! "...amazingly, incredibly, spectacularly bad." -tjc
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tjc
 Post subject:
PostPosted: Sun Jul 01, 2007 8:24 am 
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Joined: Thu Mar 25, 2004 11:00 am
Posts: 9551
Location: Arlington, MA
I get stable answers for both MD5 and SHA1. Your RAM or HD would be my first guesses.
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RichardBronosky
 Post subject:
PostPosted: Sun Jul 01, 2007 8:17 pm 
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Joined: Tue Aug 16, 2005 11:50 am
Posts: 181
Location: Douglasville, GA
It was my RAM. I tested it with memtest86 just after posting that message. I had just got from NewEgg an additional 1GB DDR 400 to add to my existing 512MB. The new one was bad.

Here is where is gets worse. I noticed that my DDR 400 was running at 166MHz, so I opened the bios to turn it up to 400MHz. As soon as I hit F10 to save and exit, the screen went black. I never got video to come out again. I can power the machine on, but I see nothing on the display. I tried resetting the CMOS. Still nothing. I don't know what component is bad, and I have no spare hardware to test with.

I think I'm done with MythTV. I can't justify buying more hardware when I don't know what I did to what I have. It's not fair to my family.

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LOL! "...amazingly, incredibly, spectacularly bad." -tjc
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