Dear Tapan, It does look like there is something wrong with this device on the PCI bus. The problem occurs before you installed the 537EP Intel driver. Jun 16 16:53:18 localhost kernel: serial 0000:04:00.0: PCI INT A -> GSI 21 (level, low) -> IRQ 21 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 Jun 16 16:53:18 localhost kernel: Couldn't register serial port 0000:04:00.0: -28 Can you also send me a: $ /sbin/lspci -vvv ???? You may also disable these three serial lines PCI devices by entering your BIOS. Next you attempted to install the 537 Intel driver at: [philippe@victor ~]$ grep 537 messages Jun 16 18:52:35 localhost kernel: Intel 537EP card found Jun 16 18:52:35 localhost kernel: This Intel(R) 537 Modem driver won't install on Intel 537EP card, please download the right driver Jun 16 18:53:02 localhost kernel: Intel 537EP card found Jun 16 18:53:02 localhost kernel: This Intel(R) 537 Modem driver won't install on Intel 537EP card, please download the right driver Jun 16 19:24:21 localhost kernel: Intel 537EP card found Jun 16 19:24:21 localhost kernel: This Intel(R) 537 Modem driver won't install on Intel 537EP card, please download the right driver Jun 17 22:26:09 localhost kernel: Intel 537EP card found Jun 18 08:06:20 localhost kernel: Intel 537EP card found Jun 18 08:32:50 localhost kernel: Intel 537EP card found Jun 18 12:09:36 localhost kernel: Intel 537EP card found and it looked to be correctly installed on Jun 17 22:26:09. - http://vouters.dyndns.org:8080/ Philippe Vouters (Fontainebleau/France)
