console resolution at boot up conflicts with modem?
I've been trying to get 1024x768 at boot up and for my consoles. Everything works fine, and the computer boots up fine. I log in but when I try to use the onboard modem by typing 'pon' there is some sort of error. The modem will actually start dialing, then at about half way through dialing it stops. Then there's a message from syslogd in the xterminal or console (it doesn't matter which) and then a whole lot of text scrolls down the screen. This text doesn't stop, the keyboard freezes, and the computer needs to be rebooted. Strangely the mouse keeps working. I cannot switch to a console, or, if I am in a console I cannot switch back. The following is my grub entry:
Code:
kernel /boot/vmlinuz-2.6.22-2-k7 root=/dev/sda7 ro noapic nolapic vga=791 Quote:
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These external modem can be had used for not much cost if you ebay shop or elsewise have access to surplus computer store and/or computer store. Linux likes hardware modem, especially likes external modem on com port. If your internal is a "Win" modem then these can difficulty to work with Linux. -- Alan. |
Thanks for the quick reply. I neglected to mention this is a laptop. I don't think I have a com 1 or com 2. Also, the modem works with the linuxant software, just not if I pass 'vga=791' as a kernel parameter. Any other ideas?
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/boot/grub/menu.lst
next snippet is from above file title Debian GNU/Linux, kernel 2.6.18-5-686 root (hd0,1) kernel /boot/vmlinuz-2.6.18-5-686 root=/dev/sda2 ro vga=0x317 initrd /boot/initrd.img-2.6.18-5-686 savedefault ------------------------------------------------------ Mine's a desktop. It didn't like the other form of vga= (that's why the hex) in mine -- I guess it's hex that I'm using -- I do not know why it didn't like the digits form Oh, I don't know much -- maybe it's not hex in mine. I *did* have to experiment with it for some time just in order to get frame buffer working like it does now for me. (default Etch for me was very huge terminal screen fonts without frame buffer). I now have near or do have 1024x768 frame buffer in terminal. ----------------------------------------------------- Wierd that modem and frame buffer (have anything) to do with each other. ---------------------------------------------- 3com or usrobotics pcmcia card modem ??? ------------------------------------- I'd do the pcmcia card thing on my (old) IBM Thinkpad 600E laptop rather than to get its onboard modem working in Linux. But I don't need a modem so I've never fiddled with same on my laptop. ------------------------------------------------- -- Alan. |
I don't know who makes the modem. The laptop is Dell, and the ordering info says the modem is integrated into the network card, which I can tell is Broadcom from lspci. BTW, I tried the 'vga=0x317' too, with the same result. It is hex. I kind-of like having the modem 'internal' and don't need 1024x768 on the consoles so badly, so I'll probably just do without the high resolution. I did read somewhere something about irq's though, and think they might be my problem. Which irq my console uses and which irq my modem uses, and how to change one of them, though, is beyond me. If anybody knows, that would be great.
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It's also possible that you have a memory mapping conflict.
If it's irq's, try pci=biosirq or some other kernel parameters affecting interrupts. |
What does one do about memory mapping conflicts. How does one even detect them? I tried 'pci=biosirq' and 'irqfixup' but neither one worked.
EDIT: I also tried 'irqpoll'. That didn't work either. |
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