Hi people. I am having troubles seting up my ricoh scsi burner under 2.4.16. here is the output from strace: earth:~# modprobe pktcdvd earth:~# strace pktsetup /dev/pktcdvd0 /dev/scd0 execve("/usr/sbin/pktsetup", ["pktsetup", "/dev/pktcdvd0", "/dev/scd0"], [/* 14 vars */]) = 0 uname({sys="Linux", node="earth", ...}) = 0 brk(0) = 0x80499dc open("/etc/ld.so.preload", O_RDONLY) = -1 ENOENT (No such file or directory) open("/etc/ld.so.cache", O_RDONLY) = 3 fstat64(3, {st_mode=S_IFREG|0644, st_size=33278, ...}) = 0 old_mmap(NULL, 33278, PROT_READ, MAP_PRIVATE, 3, 0) = 0x40016000 close(3) = 0 open("/lib/libc.so.6", O_RDONLY) = 3 read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0(\327\1"..., 1024) = 1024 fstat64(3, {st_mode=S_IFREG|0755, st_size=1171196, ...}) = 0 old_mmap(NULL, 1187968, PROT_READ|PROT_EXEC, MAP_PRIVATE, 3, 0) = 0x4001f000 mprotect(0x40137000, 41088, PROT_NONE) = 0 old_mmap(0x40137000, 24576, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED, 3, 0x117000) = 0x40137000 old_mmap(0x4013d000, 16512, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x4013d000 close(3) = 0 munmap(0x40016000, 33278) = 0 open("/dev/pktcdvd0", O_RDONLY|O_CREAT, 01001101241) = 3 open("/dev/scd0", O_RDONLY|O_NONBLOCK) = 4 ioctl(4, 0x5326, 0x7fffffff) = 4 ioctl(4, 0x5327, 0x7fffffff) = 0 ioctl(3, 0x40045801, 0x4) = -1 EINVAL (Invalid argument) dup(2) = 5 fcntl64(5, F_GETFL) = 0x2 (flags O_RDWR) brk(0) = 0x80499dc brk(0x8049b5c) = 0x8049b5c brk(0x804a000) = 0x804a000 fstat64(5, {st_mode=S_IFCHR|0600, st_rdev=makedev(136, 2), ...}) = 0 old_mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x40016000 _llseek(5, 0, 0xbffff964, SEEK_CUR) = -1 ESPIPE (Illegal seek) write(5, "ioctl: Invalid argument\n", 24ioctl: Invalid argument ) = 24 close(5) = 0 munmap(0x40016000, 4096) = 0 close(4) = 0 close(3) = 0 _exit(0) = ? earth:~# lsmod Module Size Used by Tainted: P udf 75328 0 (autoclean) pktcdvd 16136 0 sr_mod 11896 0 (autoclean) cdrom 27104 0 (autoclean) [pktcdvd sr_mod] sg 26692 0 (autoclean) usb-uhci 20644 0 (unused) usbcore 47744 0 [usb-uhci] ide-scsi 7424 0 AM53C974 11872 0 scsi_mod 85304 4 [sr_mod sg ide-scsi AM53C974] parport_pc 21128 1 (autoclean) lp 5536 0 (autoclean) parport 23264 1 (autoclean) [parport_pc lp] tulip 36896 1 mousedev 3776 1 input 3328 0 [mousedev] nls_cp437 4384 2 (autoclean) vfat 9148 1 (autoclean) fat 28792 0 (autoclean) [vfat] sb 7808 1 sb_lib 32288 0 [sb] uart401 6048 0 [sb_lib] sound 52428 1 [sb_lib uart401] soundcore 3556 5 [sb_lib sound] isa-pnp 27752 0 [sb] apm 8556 2 mga 96624 1 agpgart 29120 3 rtc 5336 0 (autoclean) unix 13700 166 (autoclean) ide-probe-mod 7968 0 (autoclean) ide-disk 6560 4 (autoclean) ide-mod 129068 4 (autoclean) [ide-scsi ide-probe-mod ide-disk] ext2 30240 0 (autoclean) (unused) ext3 54816 2 (autoclean) jbd 34248 2 (autoclean) [ext3] earth:~# running stock debian_kernel_source with the 2.4.16 patch... (2.4.17 seems unstable on my box with sound...) ` and scsi: earth:~# cat /proc/scsi/scsi Attached devices: Host: scsi0 Channel: 00 Id: 00 Lun: 00 Vendor: RICOH Model: MP6200S Rev: 2.40 Type: CD-ROM ANSI SCSI revision: 02 Host: scsi1 Channel: 00 Id: 00 Lun: 00 Vendor: E-IDE Model: CD-ROM 40X/AKU Rev: T02 Type: CD-ROM ANSI SCSI revision: 02 earth:~# have I missed something since 2.4.12? Thankyou Marco