[Bug 39815] Re: Cannot install from CD-ROM with broken DMA

[Michal Suchanek]

I tried to connect the cdrom to a different computer to get the info but
it worked there. I also had a problem with a Sony cdrom connected to an
i440BX mainboard. The system would lock up when trying to read the cd,
and it required me to wait for a while, press a key(!), and then the
kernel woud reset the interface and disable dma. It also worked when I
tried to connect the drive to a different board.

So I would suggest disabling cdrom dma on i4x0 chipsets by default. It
works sometimes but not always.

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Cannot install from CD-ROM with broken DMA
https://bugs.launchpad.net/bugs/39815
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