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Old 04-29-2008, 05:58 PM   #1
newtovanilla
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Question New kernel build won't boot.


Kernel image: /boot/vmlinuz-2.4.36
Initrd image: /boot/initrd-2.4.36
Root device: /dev/sda2 (mounted on / as reiserfs)
Resume device: /dev/sda1
WARNING Cannot determine dependencies of kernel module 'uhci-hcd'.
Does it exist? If it does, try depmod -a. Continuing without uhci-hcd.
Kernel Modules:
Features: block usb resume.userspace resume.kernel

1) This new kernel 2.4.36 just built does not boot. How can I find the problem? What do I need to look for and how do I look for it?

2) Will the kernel module dependency warning keep it from booting? How do I fix it?
 
Old 04-29-2008, 06:07 PM   #2
Okie
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you may need to determine what type of USB standard your system has (there are two) uhci-usb and ohci-usb (ehci is usb2.0 and works on both standards) of you have ohci-usb then you may need to rebuild the kernel without uhci-usb and only ohci-usb, i used to lock on an old PC just modprobing the wront usb standard...
 
Old 04-29-2008, 06:44 PM   #3
newtovanilla
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Question Usb 2

I tried "lsusb" but it gave me nothing on what type of USB I have. Then, I took a look at some of hardware information and the USB host controller is 2.0.

1) Does that mean that I do not need either of those modules? If so, what do I change in the .config to remove them? What about dependencies? If I just comment out those CONFIGs and rebuild the kernel, will that mess something else up?
 
Old 04-29-2008, 07:25 PM   #4
Okie
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even if you have usb2.0 you still need either ohci or uhci depending on your system, i recommend getting a live CD like slax and boot it up and run lsmod to see what usb modules are loaded...

and use "make menuconfig" it will be a lot easier than editing the .config file by hand, the USB settings will be in Device Drivers > USB
 
Old 04-29-2008, 09:31 PM   #5
newtovanilla
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Question Tried to boot kernel

I tried to boot this kernel, and it did not boot. The error message:

kmod: failed to exec /sbin/modprobe -s -k block-major errno=2
VFS: Can not open root device "sda1"
Kernel panic: VFS unable to mount root fs

From the "lsmod" command, there is no "uhci" but there is a "ohci". Does that mean that I do not need the "uhci" and that I can ignore that warning message?

1) How do I solve this /sbin/modprobe problem?
 
Old 04-29-2008, 10:01 PM   #6
Drone4four
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newtovanilla: I have 3 questions.

1. Can you boot into your old kernel? Like, is your old kernel an option in lilo/grub?

2. When you say you try lsusb, is this because you are on a livecd? Or have you booted your new kernel and you are using virtual terminals instead of a GUI?

3. What distro are you using?
 
Old 04-29-2008, 11:37 PM   #7
newtovanilla
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Modprobe

I tried to rebuild the kernel using only the "ochi" usb CONFIGs and left out the "uchi", but I still had the same warning message about "uhci":

WARNING Cannot determine dependencies of kernel module 'uhci-hcd'.
Does it exist? If it does, try depmod -a. Continuing without uhci-hcd.

I tried to reboot with this kernel. The error message in the boot is from /sbin/modprobe is the same as before with the "block-major" error. Modprobe has this as "sd_mod".

1) How can I find out if this is a missing module? Would loading this module with the kernel fix this error?

2) What does the /sbin/modprobe -s -k block-major error mean? What causes it?
 
  


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