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#1 2010-12-14 10:46:50

SanskritFritz
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From: Budapest, Hungary
Registered: 2009-01-08
Posts: 1,817
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[solved] zen-kernel installed, now grub doesnt work with usb keyboard

This is really strange. I was already using kernel26zen-git, now I upgraded to zen-kernel, and suddenly grub doesnt recognise my usb keyboard, the normal keyboard still works ok. How is this possible? I thought grub comes before the kernel even gets executed. How can a different kernel have such influence on grub? Reinstalling the kernel26zen-git package makes grub work again with both keyboards.
For the record, after I wait for the timeout in grub and boot archlinux, everything works well, including the usb keyboard.
Please help me.

Last edited by SanskritFritz (2010-12-17 10:03:14)


zʇıɹɟʇıɹʞsuɐs AUR || Cycling in Budapest with a helmet camera || Revised log levels proposal: "FYI" "WTF" and "OMG" (John Barnette)

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#2 2010-12-14 12:38:54

Ber
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From: Belgium
Registered: 2006-07-05
Posts: 80
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Re: [solved] zen-kernel installed, now grub doesnt work with usb keyboard

indeed grub takes place before the kernel is even loaded.  Maybe compare grub's config file before and after you install the problematic kernel (with pacman I guess), but if I remind correctly archlinux doesn't touch this file when installing kernel.  Other than that I don't see how it is possible.


V=RI sweet V=RI

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#3 2010-12-14 13:48:41

SanskritFritz
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From: Budapest, Hungary
Registered: 2009-01-08
Posts: 1,817
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Re: [solved] zen-kernel installed, now grub doesnt work with usb keyboard

No change was made in grub of course, except that I changed the menu.lst to point to the new kernel. I'm perplexed, this is a mystery for me.


zʇıɹɟʇıɹʞsuɐs AUR || Cycling in Budapest with a helmet camera || Revised log levels proposal: "FYI" "WTF" and "OMG" (John Barnette)

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#4 2010-12-14 14:47:53

bangkok_manouel
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From: indicates a starting point
Registered: 2005-02-07
Posts: 1,556

Re: [solved] zen-kernel installed, now grub doesnt work with usb keyboard

mystery.gif

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#5 2010-12-14 15:40:12

SanskritFritz
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From: Budapest, Hungary
Registered: 2009-01-08
Posts: 1,817
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Re: [solved] zen-kernel installed, now grub doesnt work with usb keyboard

lol but how do I solve this? how can I tell grub to use the usb keyboard?


zʇıɹɟʇıɹʞsuɐs AUR || Cycling in Budapest with a helmet camera || Revised log levels proposal: "FYI" "WTF" and "OMG" (John Barnette)

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#6 2010-12-17 10:02:34

SanskritFritz
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From: Budapest, Hungary
Registered: 2009-01-08
Posts: 1,817
Website

Re: [solved] zen-kernel installed, now grub doesnt work with usb keyboard

Ok, too much mystery hurts my brain, so I went on and double checked my first statement. I reinstalled kernel26zen-git again, and sure enough, grub didnt work with my usb keyboard this time either. Just by coincidence, I happened to install the new zen-kernel the same time as I bought this new keyboard. All that remained was to find out why grub doesnt recognise the usb keyboard.
So, for the record, here is how: I just enabled the legacy usb setting in the bios.


zʇıɹɟʇıɹʞsuɐs AUR || Cycling in Budapest with a helmet camera || Revised log levels proposal: "FYI" "WTF" and "OMG" (John Barnette)

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#7 2010-12-17 15:22:58

pany
Member
Registered: 2009-08-11
Posts: 5

Re: [solved] zen-kernel installed, now grub doesnt work with usb keyboard

In a similar situation, i had to add HOOKS="... usbinput ... " in my /etc/mkinitcpio.conf, before building the kernel.

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#8 2010-12-17 18:26:31

SanskritFritz
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From: Budapest, Hungary
Registered: 2009-01-08
Posts: 1,817
Website

Re: [solved] zen-kernel installed, now grub doesnt work with usb keyboard

pany wrote:

In a similar situation, i had to add HOOKS="... usbinput ... " in my /etc/mkinitcpio.conf, before building the kernel.

I don't think that would do anything with Grub behavior.


zʇıɹɟʇıɹʞsuɐs AUR || Cycling in Budapest with a helmet camera || Revised log levels proposal: "FYI" "WTF" and "OMG" (John Barnette)

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#9 2010-12-18 09:22:23

pany
Member
Registered: 2009-08-11
Posts: 5

Re: [solved] zen-kernel installed, now grub doesnt work with usb keyboard

Sorry there SanskritFritz. Missed the part that your problem stayed with grub.
In your case enabling "USB Legacy Support" in BIOS, was the right thing to do.
That's a "low level setting" and in my opinion should always be enabled for
compatibility reasons (hardware, boot-loaders, OSes).

In my case, if i recall correctly, the problem appeared when i tried to connect
a newly bought ms wireless keyboard + mouse pack, after a kernel upgrade. The
thing wasn't working, neither in grub nor in KDM,  thus adding "usbinput" in "HOOKS",
and rebuilding the same kernel, solved it for me.

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