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zombics
n00b
Joined: 28 Feb 2005
Posts: 30
Location: israel
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 Posted: Tue Nov 28, 2006 1:11 pm Post subject: downgrade kernel? |
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ok, i want 2 try 2 downgrade my gentoo-sources back 2 2.6.17, but i dont have them on my PC, and i can find how to do it.
can any1 help me with this? |
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batistuta
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Joined: 29 Jul 2005
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Location: Aachen
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| Posted: Tue Nov 28, 2006 1:21 pm Post subject: |
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| first, please write in English. It makes it easier. Second, I'm not sure what the problem is. Just emerge the sources you need using emerge gentoo-sources with the specific version. Kernel sources are sloted so it should not be a problem to have more than one. Then of course, this is just the sources. You then need to recompile, because emerging sources doesn't compile them for you. Do you know how to do that? |
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zombics
n00b
Joined: 28 Feb 2005
Posts: 30
Location: israel
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| Posted: Tue Nov 28, 2006 1:44 pm Post subject: |
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| yes i know that, all i was asking is how do i emerge the older version? |
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batistuta
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| Posted: Tue Nov 28, 2006 2:00 pm Post subject: |
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Try | Code: | | # emerge -av1 =gentoo-sources-2 2.6.17 |
Last edited by batistuta on Tue Nov 28, 2006 5:25 pm; edited 1 time in total |
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zombics
n00b
Joined: 28 Feb 2005
Posts: 30
Location: israel
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| Posted: Tue Nov 28, 2006 3:57 pm Post subject: |
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ok i meneged 2 do it.
i emerge it with =gentoo-soures-ver and unmasked it.
thx for your help |
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sirdilznik
l33t
Joined: 28 Apr 2005
Posts: 731
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| Posted: Wed Nov 29, 2006 6:25 am Post subject: |
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| One issue I can think of when downgrading a kernel would be if you downgraded to below your linux-headers version (though this is not the case with the OP). For example, if you have linux-headers-2.6.17 installed and you downgraded to a 2.6.16 kernel, I would imagine that would cause a kernel panic on boot. |
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batistuta
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| Posted: Wed Nov 29, 2006 8:13 am Post subject: |
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| sirdilznik wrote: | | One issue I can think of when downgrading a kernel would be if you downgraded to below your linux-headers version (though this is not the case with the OP). For example, if you have linux-headers-2.6.17 installed and you downgraded to a 2.6.16 kernel, I would imagine that would cause a kernel panic on boot. |
Do you mean, in case a driver like nvidia or alsa-driver was compiled against a different kernel source? Would this really cause a kernel panic or just a non-loadable module? |
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sirdilznik
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Joined: 28 Apr 2005
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| Posted: Wed Nov 29, 2006 8:40 am Post subject: |
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| batistuta wrote: | | sirdilznik wrote: | | One issue I can think of when downgrading a kernel would be if you downgraded to below your linux-headers version (though this is not the case with the OP). For example, if you have linux-headers-2.6.17 installed and you downgraded to a 2.6.16 kernel, I would imagine that would cause a kernel panic on boot. |
Do you mean, in case a driver like nvidia or alsa-driver was compiled against a different kernel source? Would this really cause a kernel panic or just a non-loadable module? |
No, I meant linux-headers. Not recompiling modules should only result in the module failing to load, the OS should boot up fine otherwise. |
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batistuta
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| Posted: Wed Nov 29, 2006 10:47 am Post subject: |
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| I'm not that familiar with that... could you please explain? I've thought that the linux image is just that, a binary image and that no sources (headers) are required in order to boot. |
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sirdilznik
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| Posted: Thu Nov 30, 2006 5:41 am Post subject: |
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| batistuta wrote: | | I'm not that familiar with that... could you please explain? I've thought that the linux image is just that, a binary image and that no sources (headers) are required in order to boot. |
I'm not an expert in this area either. Maybe the OS would boot fine with linux-headers lower version than the kernel itself, but I'm sure it would cause problems elsewhere. |
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batistuta
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| Posted: Thu Nov 30, 2006 8:04 am Post subject: |
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| well, my question is why does the kernel need the headers in the first place |
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andrewd18
Guru
Joined: 11 Apr 2004
Posts: 364
Location: Wisconsin, USA
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| Posted: Thu Nov 30, 2006 1:46 pm Post subject: |
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| batistuta wrote: | | well, my question is why does the kernel need the headers in the first place |
Because every piece of software is compiled against those, and without them working properly, nothing would work right.
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