Messages in this thread | | | Date | Tue, 15 Jul 2003 00:48:26 -0700 | From | "B. D. Elliott" <> | Subject | "Where's the Beep?" (PCMCIA/vt_ioctl-s) |
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On my old DELL LM laptop the -2.5 series no longer issues any beeps when a card is inserted. The problem is in the kernel, as the test program below (extracted from cardmgr) beeps on -2.4, but not on -2.5.
=========================================================== #include <sys/types.h> #include <stdio.h> #include <stdlib.h> #include <unistd.h> #include <fcntl.h> #include <errno.h> #include <sys/ioctl.h>
#define BEEP_TIME 150 #define BEEP_OK 1000 #define BEEP_WARN 2000 #define BEEP_ERR 4000
#include <sys/kd.h>
static void beep(unsigned int, unsigned int);
int main(int argc, char **argv) { beep(500, 1000); beep(500, 2000); beep(500, 4000); return 0; }
static void beep(unsigned int ms, unsigned int freq) { int fd, arg;
fd = open("/dev/tty0", O_RDWR); if (fd < 0) return; arg = (ms << 16) | freq; ioctl(fd, KDMKTONE, arg); close(fd); usleep(ms*1000); } ===========================================================
-- B. D. Elliott bde@nwlink.com - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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