Mark Spencer wrote:
I am having trouble getting the te410p to work with a serial console. Has anyone else had this problem? Am I doing somthing wrong? Interupt problem? Is this a bug?
The serial console likely is blocking interrupts for too long when it engages. Zaptel requires interrupts be serviced 1000 times per second, for an interrupt latency of < 1ms max. Generally this is not a problem, but some systems in linux (e.g. IDE if DMA is enabled, Framebuffer console, etc) block interrupts for exceptionally long periods of time, thus causing this sort of problem.
[Snip...]
I guess in the case of IDE DMA, using hdparm -u1 would remove the interrupt blocking. DMA on IDE disks is a nice thing to have...
Richard
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