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
On Sun, 1 Jun 2008 21:56:21 +0100 Chris Vine <[email protected]> wrote:
> 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.
>
Fun. Presumably that means there's some serial fix which we forgot
to backport. Or it isn't in 2.6.25.x yet.
> > The serial driver in 2.6.24.7 works correctly, and the good news is
> > that 2.6.26-rc2 also works fine.
> >
>
> Fun. Presumably that means there's some serial fix which we forgot
> to backport. Or it isn't in 2.6.25.x yet.
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
On Fri, 6 Jun 2008 11:09:28 +0100
Alan Cox <[email protected]> wrote:
> 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.
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
> Who uses internet dial-up these days? However, it could be something
Quite a lot of people, especially outside the UK.
> 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.
Good to know.