Bug 62195 – Livecd: Ignoring boot parameters

• Product: Gentoo Release Media
• Status: RESOLVED FIXED

[Description Jirka 2004-08-30 01:31:23 UTC]

I try to boot Gentoo 2004.2 Universal LiveCD without USB modules. Even if I enter boot parameter NOUSB, USB modules are loaded.

Reproducible: Always
Steps to Reproduce:
1. Boot Gentoo 2004.2 Universal LiveCD
2. Enter these boot parameters: gentoo nousb nodetect nohotplug
3. Watch interactive boot screen(F2), to see that USB modules are still loaded (EHCI-HCD, USBCORE, USB-STORAGE).
Actual Results:  
Gentoo ignore my boot parametrs -> My machine totally hangs. With older versions
of Gentoo LiveCDs works boot parameters just fine.

[Comment 1 Chris Gianelloni (RETIRED) 2004-08-30 04:18:00 UTC]

I'll look into it.

[Comment 2 Chris Gianelloni (RETIRED) 2004-10-09 16:46:40 UTC]

Tim: does genkernel do the USB loading?  It appears that it is loading USB modules even when nousb is being passed.

[Comment 3 Tim Yamin (RETIRED) 2004-10-10 01:19:59 UTC]

Chris, does the bootloader pass any arguments to genkernel? It must pass some, I'm wondering what they would be - and would they be appended or prepended onto user-supplied commands?

[Comment 4 Chris Gianelloni (RETIRED) 2004-10-10 13:15:21 UTC]

John, do you know?

[Comment 5 John Davis (zhen) (RETIRED) 2004-10-10 18:46:28 UTC]

yeah, these are the default options hardcoded into the isolinux config via catalyst:

append initrd=${x}.igz root=/dev/ram0 init=/linuxrc acpi=off ${cmdline_opts} ${custom_kopts} cdroot vga=791 splash=silent

$x is the kernel name, $cmdline opts has the possibility of being set to (nodevfs, udev), (noudev, devfs), and (looptype=zisofs/squashfs/etc loop=$appropriate_loop_location}, and vga=791/ splash=silent get dropped if the $kernel-nofb kernel is used.

[Comment 6 Chris Gianelloni (RETIRED) 2004-10-11 04:08:34 UTC]

Would it be too late to change acpi=off to acpi=ht (enable hyperthreading support only) by default?

[Comment 7 John Davis (zhen) (RETIRED) 2004-10-11 06:09:50 UTC]

does acpi=ht leave the rest of the acpi stuff off? and how does this fix the usb problem?

[Comment 8 Chris Gianelloni (RETIRED) 2004-10-11 14:56:20 UTC]

Actually, has nothing to do with usb... and yeah, it enables only hyperthreading enumeration and nothing else...

Tim: any idea on the usb stuff yet?

[Comment 9 Chris Gianelloni (RETIRED) 2004-10-13 18:39:20 UTC]

Tim: I tested with your genkernel patch, and still usb (uhci and another) were attempted.  Also, the usb module names are different in 2.6 from 2.4, so we need to try both.  Right now we're only trying the 2.4 names.

[Comment 10 Chris Gianelloni (RETIRED) 2004-10-13 18:44:41 UTC]

Modules on my machine(s):

ohci_hcd
ehci_hcd
uhci_hcd
usbhid

[Comment 11 Chris Gianelloni (RETIRED) 2004-10-14 05:43:35 UTC]

Created attachment 41799 [details, diff]
modules_load patch

This patch lets genkernel load the 2.6 usb modules along with the 2.4 usb
modules, so it should work for either kernel set.

[Comment 12 Chris Gianelloni (RETIRED) 2004-10-16 00:20:55 UTC]

This should work on the next LiveCD (been tested by me) with the patch that plasmaroo provided to me to test.

REOPEN if there is still a problem.