Messages in this thread | | | From | Svein Ove Aas <> | Subject | Re: DVD-RAM crashing system | Date | Sat, 19 Jul 2003 00:08:31 +0200 |
| |
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1
fredag 18. juli 2003, 22:06, skrev Nachman Yaakov Ziskind: > Anyone out there with tips on how to resolve this? Perhaps I can > force the kernel to think that DMA has been disabled?
No tips, I'm afraid, but don't even *think* about doing that. As the technician said, the problem is with the chipset not accepting commands properly; fortunately, the kernel appears to catch the situation and avoid (potential) severe damage.
Forcing the kernel to act as if DMA is fully disabled when in fact it isn't sounds like a very bad idea indeed; the best you could probably hope for is to have the machine crash without losing any data.
My suggestion is this: As the hardware is obviously broken, and disabling DMA would cause a horrendous performance drop anyway, you should get a new chipset. Return the one you have as broken.
If that isn't an option, for whatever reason, you might try switching to a lower-speed DMA mode using hdparm. Something like "hdparm -Xudma0 /dev/hdx" might help, if you're lucky.
- - Svein Ove Aas -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.2 (GNU/Linux)
iD8DBQE/GG/f9OlFkai3rMARApCiAKCojeoY+nfskcM6EKFco8xktnSfjQCfTq6u rkZjj7+DtP90zv8cHuTorrA= =lr9Y -----END PGP SIGNATURE-----
- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| |