On m'a demandé ça récemment, cela complète le thread qui s'est arrêté vers mars 2000. With 2.2.16 (maybe 2.2.17+), the ltmodem.o driver supplied by Lucent (NOT the one on linmodems.org which seems to be even older and crashing even more) doesn't work. -rw-r--r-- 1 root root 557724 Sep 27 13:04 /lib/modules/2.2.16/misc/ltmodem.o 59a33b43fe7a35efd20770ba84da54c8 /lib/modules/2.2.16/misc/ltmodem.o It seems there has been a change to include/linux/tty.h between 2.2.13 (which works perfectly, apart from a few timer reinsert warnings) and 2.2.16. I have not reverted those changes, but moved them in the hope it will work. The symptom was: cu seems to mostly work, but pppd crashes as soon as the line discipline is inserted. The patch: *** tty.h.REAL Wed Sep 27 12:38:49 2000 --- tty.h Wed Sep 27 12:55:56 2000 *************** *** 277,283 **** int alt_speed; /* For magic substitution of 38400 bps */ struct wait_queue *write_wait; struct wait_queue *read_wait; - struct wait_queue *poll_wait; struct tq_struct tq_hangup; void *disc_data; void *driver_data; --- 277,282 ---- *************** *** 305,310 **** --- 304,322 ---- unsigned int canon_column; struct semaphore atomic_read; struct semaphore atomic_write; + /* [EMAIL PROTECTED] + * -- Those two are managed and allocated/initialized by + * tty, not by driver. However, putting poll_wait in the + * middle of the structure makes e.g. referencing of + * user (serial driver) data wrong. I can understand + * to group the structure members, however a change like + * this is ONLY for x going to x +1 in 2.x. Of course, + * you can recompile drivers, but what about binary-only + * drivers ? e.g. ltmodem.o (Lucent) was broken between + * 2.2.13 and 2.2.16. In an ideal world, Lucent would supply + * sources ... + */ + struct wait_queue *poll_wait; spinlock_t read_lock; }; If you apply that patch, you must recompile your kernel, all your modules, and not use another binary-only module. Especially you will need to recompile the PPP modules. I have successfully tested those changes: I can no longer make it crash. There might be however, other problems. -- http://www-internal.alphanet.ch/linux-leman/ avant de poser une question.