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 220.127.116.11 and 18.104.22.168 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 22.214.171.124 works correctly, and the good news is
that 2.6.26-rc2 also works fine.
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.