On Friday 13 July 2007 05:54:02 pm Kallol Biswas wrote: > I have been trying to install debian 40r0 on hp longs > peak itanium server. The installation hangs trying to > configure net.... I copied the debian-ia64 list, which is probably a better place to start. The HP management processor contains a virtual UART that is implemented partly in hardware and partly in firmware. There have been a number of issues related to the fact that it is not a real 16550 UART. Here's a summary of the issues I know about. My guess is that you're seeing the first one, so I'd start by checking your MP firmware revision. * serial console device lockup - system responds via network - no input or output via serial console device - occurs when application opens device while transmit buffer contains polled-mode kernel output, typically during boot - INIT dump shows CPUs in idle loop - after system reset, MP event log shows "BOOT_PLAT_CONSOLE_DEV_FAILED" or similar event - hang is resolved only by MP reset; system reset is not sufficient - resolved in MP firmware E.03.29 or later (rx16x0, rx26x0, rx4640, rx5670) - resolved in MP firmware F.01.39 or later (rx3600, rx6600) * serial console driver deadlock - system completely unresponsive to all devices - INIT dump shows one or more CPUs in ia64_spinlock_contention, waiting for a ttyS UART lock (lock ptr in r31) * serial device out of sync with driver - system responds via network - serial output stops - sending serial input generates an interrupt that causes up to 16 more characters of output - re-opening the device fixes the problem * serial device drops interrupt - system responds via network - serial output stops - sending serial input generates an interrupt that resolves the problem > EFI Time Services Driver v0.4 > Serial: 8250/16550 driver $Revision: 1.90 $ 4 ports, IRQ sharing enabled > 00:04: ttyS0 at MMIO 0xff5e0000 (irq = 49) is a 16550A > 00:05: ttyS1 at MMIO 0xff5e2000 (irq = 50) is a 16550A > GSI 82 (level, low) -> CPU 1 (0x0100) vector 51 > ACPI: PCI Interrupt 0000:e0:01.0[A] -> GSI 82 (level, low) -> IRQ 51 > 0000:e0:01.0: ttyS2 at MMIO 0xf8031000 (irq = 51) is a 16550A > ACPI: PCI Interrupt 0000:e0:01.1[A] -> GSI 82 (level, low) -> IRQ 51 > 0000:e0:01.1: ttyS3 at MMIO 0xf8030000 (irq = 51) is a 16550A > Couldn't register serial port 0000:e0:01.1: -28 > RAMDISK driver initialized: 16 RAM disks of 32768K size 1024 blocksize > mice: PS/2 mouse device common for all mice > TCP bic registered > NET: Re - To unsubscribe from this list: send the line "unsubscribe linux-ia64" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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