Comment 9 for bug 52967

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stefab (bluefuture) wrote : Re: Amilo 1520 sleep doesn't resume from suspend, caused by video bios?

Please see also this[1]
As suggested by fellow user skipper (who I thank very much) there is a way to make the touchpad work after a suspend/resume.

The solution is a downgrade of the BIOS of the laptop to version 1.10. The problem, in fact, seems to be related to the two latest versions of the BIOS (v1.19 and v1.20). Anyone who does not necessarily need one of these two later BIOS versions, should downgrade to v1.10 to make suspend work.

If your SI1520 does not mount an Intel Core Duo (Yonah) D0 stepping processor (which means mainly those CPUs coded T2x00) you can downgrade to version 1.10. Otherwise you'll have to stick with a BIOS version >= 1.17 and with no touchpad after resume. :-(

[1] http://si1520.blogspot.com/2007/04/touchpad-finally-working-again-after.html