woody: devpts, pppd, and kernel-2.6: failed connection to /dev/pts/0

From: Mario Vukelic (mario.vukelic_at_dantian.org)
Date: 12/31/03

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    To: debian-user <debian-user@lists.debian.org>
Date: Wed, 31 Dec 2003 20:07:34 +0100

    Hi,

    Today I've installed kernel-image-2.6.0 from backports.org on my woody
    pc. Until now I've always used self-compiled kernels, but decided to
    change to the kernel-images now. Those have devpts compiled in,while I
    had that never in my own kernels. Not sure why, but in any case, I never
    had problems. To use devtps, I added it to /etc/fstab:

    devpts /dev/pts devpts gid=5,mode=620 0 0

    Reboot worked ok, save for a couple of (hopefully) unrelated warnings.

    The output of mount looks correct to me:
    devpts on /dev/pts type devpts (rw,gid=5,mode=620)

    But, using kernel-image-2.6.0, I lost my internet connection over pppoe.
    Investigation showed that with my 2.4 kernel without devpts, pppd would
    establish a connection over /dev/ttyp0:

    Dec 31 17:38:24 sonic pppd[275]: pppd 2.4.1 started by root, uid 0
    Dec 31 17:38:24 sonic pppd[275]: Serial connection established.
    Dec 31 17:38:24 sonic pppd[275]: using channel 1
    Dec 31 17:38:24 sonic pppd[275]: Using interface ppp0
    Dec 31 17:38:24 sonic pppd[275]: Connect: ppp0 <--> /dev/ttyp0
    Dec 31 17:38:25 sonic pppd[275]: sent [LCP ConfReq id=0x1 <asyncmap 0x0>
    <magic
    0xf96c480e>]
    Dec 31 17:38:25 sonic pppd[275]: rcvd [LCP ConfAck id=0x1 <asyncmap 0x0>
    <magic
    0xf96c480e>]
    [...]

    Using the kernel-image, pppd tries to use /dev/pts/<num>, which fails,
    and leads to a timeout:

    Dec 31 18:06:34 sonic pppd[447]: pppd 2.4.1 started by root, uid 0
    Dec 31 18:06:34 sonic pppd[447]: Serial connection established.
    Dec 31 18:06:34 sonic pppd[447]: Using interface ppp0
    Dec 31 18:06:34 sonic pppd[447]: Connect: ppp0 <--> /dev/pts/0
    Dec 31 18:07:05 sonic pppd[447]: LCP: timeout sending Config-Requests
    Dec 31 18:07:05 sonic pppd[447]: Connection terminated.

    All amounts of googling and trying stuff lead to nothing. Unfortunately,
    after booting 2.6, I lost my mouse with the 2.4 kernel, so now I have to
    choose between no internet with 2.6 and no mouse with 2.4. Hopefully
    somebody knows how to fix one of those, preferably the devpts issue :)

    Thanks 

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