Public bug reported: Binary package hint: linux-image-2.6.15-26-powerpc
My native language is not english, but I will try to help. To reproduce simply make a serial connection (maybe ppp) with one of the ports and next made another connection with the other serial port you will percept a slow down when have activity in both ports (is practically impossible to became with the connection established for more than 5 minutes). This problem occur in all 2.6 kernels that I try (2.6.8, 2.6.10, 2.6.15,2.6.16 and 2.6.17). In kernels 2.6.15 and up this problem is still more bad because the serial ports operate so much slowly (reported in bug #63289). Macintosh Performa 6400 Serial ports possible zilog ** Affects: linux-source-2.6.15 (Ubuntu) Importance: Undecided Status: Unconfirmed -- Serial ports don't work together in oldworld https://launchpad.net/bugs/63292 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs