Alternate install CDs erroneously appearing as corrupt
I've been trying to install Kubuntu Feisty on my brand-new Lenovo ThinkPad R61 via the alternate install CD.
I've verified the md5sum of the downloaded ISO, k3b confirmed the data had been written correctly, and when I boot on the CD on my older Dell laptop and select the option to check the integrity of the disc, it passes.
However, once in the ThinkPad, installation fails, noting corrupt packages on the disc, and the integrity check also refers to corrupt packages. The same failure occurs with an Edgy alternate install CD.
There are some error messages which show up but vanish faster than I can effectively write them down---if anyone can advise on a way to get hold of this data I'd be grateful. The errors may be prevented by adding 'irqpoll' to the boot options.
I have tried liveCDs and other install methods for (K)ubuntu, Fedora and Sabayon and the laptop rejects them all. Among the errors on the liveCD are the tty error referred to in bug #106864; the described workaround does fails on my system.
I have posted details on the livecd errors on the Ubuntu forums at,
http://
http://
The specification for the ThinkPad R61 is here:
http://
My suspicion is that the liveCD problems and the apparent "corruption" on the alternate install CD stem from the same problem, probably some major hardware issue that prevents the system from reading the CD properly, but I have no idea how to go about fixing it. I have tried adding a number of options to the initial install dialogue, such as irqpoll and/or acpi=off noapic, but to no avail.
Can anyone advise? Thanks in advance for any help.
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