Dear Tapan, Your stty output seems to NOT come from the 536EP/537EP driver !!!! There is still a driver conflict between serial8250 and the 537EP. My intuition goes to those lines. Your Silicon 537 [Winmodem] ought to be recognized as ttyS1 (16450 chip), ttyS2 (8250 chip) and ttyS3 (16450 chip). And this comes early after kernel boot. Jun 16 16:53:18 localhost kernel: 0000:04:00.0: ttyS1 at I/O 0x1008 (irq = 21) is a 16450 Jun 16 16:53:18 localhost kernel: 0000:04:00.0: ttyS2 at I/O 0x1010 (irq = 21) is a 8250 Jun 16 16:53:18 localhost kernel: 0000:04:00.0: ttyS3 at I/O 0x1018 (irq = 21) is a 16450 I have NO idea of getting rid from this except filling in a bug report at Red Hat's bugzilla. Warmest regards to you. - http://vouters.dyndns.org:8080/ Philippe Vouters (Fontainebleau/France) Le jeudi 18 juin 2009 à 22:13 +0530, Tapan Chugh a écrit : > Philippe Vouters wrote: > > Dear Tapan, > > > > Could you try the following ? This may crash or hang your system. If it > > does not, send me the dmesg output > > > > [root@victor intel-536-537]# stty -a -F /dev/modem > > speed 115200 baud; rows 0; columns 0; line = 0; > > intr = ^C; quit = ^\; erase = ^?; kill = ^U; eof = ^D; eol = <undef>; > > eol2 = <undef>; swtch = <undef>; start = ^Q; stop = ^S; susp = ^Z; rprnt > > = ^R; > > werase = ^W; lnext = ^V; flush = ^O; min = 1; time = 0; > > -parenb -parodd cs8 hupcl -cstopb cread clocal -crtscts > > -ignbrk -brkint -ignpar -parmrk -inpck -istrip -inlcr -igncr icrnl ixon > > -ixoff > > -iuclc -ixany -imaxbel -iutf8 > > opost -olcuc -ocrnl onlcr -onocr -onlret -ofill -ofdel nl0 cr0 tab0 bs0 > > vt0 ff0 > > isig icanon iexten echo echoe echok -echonl -noflsh -xcase -tostop > > -echoprt > > echoctl echoke > > > > - > > http://vouters.dyndns.org:8080/ > > Philippe Vouters (Fontainebleau/France) > > > > > > > > > Dear Philippe, > > When i executed > > stty -a -F /dev/modem > > it did not hang. However it did not give output matching yours. > Here is the output - > > stty: /dev/modem: Bad address > > This happened for the first time. The second time i executed the same command it gave a segmentation fault. And whem i executed the command, I got correct output. Here is the output > > speed 19200 baud; rows 0; columns 0; line = 0; > intr = <undef>; quit = <undef>; erase = <undef>; kill = <undef>; eof = <undef>; > eol = <undef>; eol2 = <undef>; swtch = <undef>; start = ^Q; stop = ^S; > susp = <undef>; rprnt = <undef>; werase = <undef>; lnext = <undef>; > flush = <undef>; min = 1; time = 0; > -parenb -parodd cs8 -hupcl -cstopb cread clocal -crtscts > ignbrk -brkint ignpar -parmrk -inpck -istrip -inlcr -igncr -icrnl -ixon -ixoff > -iuclc -ixany -imaxbel -iutf8 > -opost -olcuc -ocrnl -onlcr -onocr -onlret -ofill -ofdel nl0 cr0 tab0 bs0 vt0 ff0 > -isig -icanon -iexten -echo -echoe -echok -echonl -noflsh -xcase -tostop -echoprt > -echoctl -echoke > > Then when i executed efax, it also started working correctly. > Thanks for helping me out. However i would like to understand what happened when it started working without any editing > > >
