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On Sunday 02 April 2006 18:31, Uwe Thiem wrote: |
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> Hi folks, |
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> |
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> Kernel is 2.6.14-r3. I am using splash and, probably ore important, a |
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> background picture in a framebuffer on every virtual text console. |
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> |
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> A long download is running on one text console (ppp with an analogue |
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> modem). I am in X and switch back text console to check on the download. |
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> |
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> Each and every tie I do that, the download rate drops and stalls while TX |
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> on the modem goes on flickering. After a short while, stalling is over, the |
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> download rate jumps to an insanely high value and eventually drops down to |
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> the modem speed again. |
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> |
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> Usually that means an out-of-order package or a package got dropped because |
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> it was corrupted. |
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> |
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> Now y curious questions: Does switching fro X to a text console with |
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> framebuffer disturbs interrupt handling that badly that I get a buffer |
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> overrun on the serial port the modem is attached to? From my point of view, |
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> that is the most likely explanation. Anyone who actually knows what is |
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> happening? |
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> |
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> Uwe |
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> |
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> -- |
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> Why do consumers keep buying products they will live to curse? |
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|
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From my experience switching to and from X will temporarily freeze your system |
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and depending on the buffers in your modem you could get a buffer overflow |
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there. |
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I'm not why but I've noticed it aswell (for example while timing some stuff, |
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there was a bit of a gap after switching) |
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|
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-- |
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Rick van Hattem Rick.van.Hattem(at)Fawo.nl |
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