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modem dirver and smp kernel

Posted on 2003-11-08
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Last Modified: 2010-03-18
hello experts
I have rh9.0. I have been trying to install my modem driver but each time it says that it doesn't support smp kernel. I have a 2.4.20.xx smp kernel. I tried reconfiguring the kernel but it didn't work. What can I do so that I am able to install the modem driver.
please help.
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Question by:darpangoel
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by:jlevie
ID: 9709920
I assume that the modem driver you have is for one of the winmodems. If that's the case you'd have to be able to get a driver built for an SMP kernel in order to get it to work on a multi-processor system. From what I've seen of winmodem drivers the vendors don't release the source so you can't built it yourself and are at the mercy of the vendor w/respect to an SMP driver. Personally, I'd just get a good "real modem" and hook it up to a serial port and skip all the winmodem silliness.
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by:darpangoel
ID: 9713645
For that i'll have to download the dirver. is it possible for me to change the kernel config or just recompile the kernel so that i am no more using the smp kernel and install the driver. will it work?
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by:jlevie
ID: 9714874
On a normal RedHat system both the uni-processor and SMP kernel are installed if the installer detects multi-processor hardware and Grub will be configured to default to the SMP kernel. To run the non-SMP kernel you simply need to select the other kernel on the Grub boot screen.
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by:darpangoel
ID: 9721113
yeah thats the problem. actuall i don't have a smp machine but what happened was that when i first loaded linux grub didn't load properly so i installed a new kernel using the cd so that i could reinstall the boot loader (grub). so grub now doesn't give me the non smp option.
i want to rectify this problem whiout using the cd.
thanx
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jlevie earned 250 total points
ID: 9721967
That's easily enough fixed. First you want to check /boot and /lib/modules to make sure that you have the files associated with an uni-processor kernel on the system. They should be there if your "fix" only installed the SMP kernel. Then you need to edit /boot/grub/grub.conf and add a stanza for the unit-processor kernel. Right now your grub.conf might contain a boot stanza something like:

title Red Hat Linux (2.4.20-20.7-SMP)
        root (hd0,0)
        kernel /vmlinuz-2.4.20-20.7-SMP ro root=/dev/sda2
        initrd /initrd-2.4.20-20.7-SMP.img

Adding a boot stanza like:

title Red Hat Linux (2.4.20-20.7)
        root (hd0,0)
        kernel /vmlinuz-2.4.20-20.7 ro root=/dev/sda2
        initrd /initrd-2.4.20-20.7.img

Before the SMP stanza will make the default boot be to the uni-processor kernel.
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