Because I have had to resort to using dial-up this weekend, I noticed
that the serial driver for the 8250/16550 UART in the 2.6.25 kernel does
not work correctly with ppp-2.4.4. After establishing a dial-up modem
connection it becomes unresponsive and pppd will exit waiting to
establish a ppp connection after sending LCP configuration requests.  I
have tested this with two different dial-up modems and at two different
dial-up providers, with the 2.6.25.3 and 2.6.25.4 kernels.

pppd works fine with the 2.6.25 kernel if the serial driver is not used
(for example if establishing a ppp connection over (in kernel) ATM or
via an (out of kernel tree) softmodem driver I have.

The serial driver in 2.6.24.7 works correctly, and the good news is
that 2.6.26-rc2 also works fine.

Chris

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Fun.  Presumably that means there's some serial fix which we forgot
to backport.  Or it isn't in 2.6.25.x yet.

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No relevant changes, and the 2.6.26 stuff isn't a trivial backport or
relevant either that I can see. Also it seems to work for everyone else
which makes me suspicious.

Alan
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On Fri, 6 Jun 2008 11:09:28 +0100

Who uses internet dial-up these days?  However, it could be something
odd about my hardware, which is a laptop using via chipsets, but it
is also ppp specific, as I can receive faxes with a fax modem using the
2.6.25 serial driver.

Anyway, I have checked with the serial driver in the latest 2.6.26
(2.6.26-rc5) and that still works fine with ppp.

Chris

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> Who uses internet dial-up these days?  However, it could be something


Good to know.
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