198810 2007-11-11 14:31 0000 linux boot hangs with intel Q35 chipset 2008-02-26 17:10:46 0000 1 1 1 Unclassified Gentoo Linux Core system unspecified x86 Linux RESOLVED FIXED linux-2.6.24 InSVN P2 normal --- 1 andreas.eckstein@gmx.net kernel@gentoo.org andreas.eckstein@gmx.net 2007-11-11 14:31:54 0000 The linux kernel boot will hang at ACPI initialisation unless acpi=off or pci=nommconf are used as boot parameters. The kernel devs are aware of the problem: http://kerneltrap.org/mailarchive/linux-kernel/2007/8/26/164870 but as of linux-2.6.24_rc2, the patch from the discussion hasn't made it into mainline. There's talk about BIOS updates fixing the issue for G33 chipsets, but not so for Q35 (I'm using the latest BIOS for the intel DQ35JO board). I've tested the patch against vanilla-sources-2.6.24_rc2 and haven't noticed any negative effects so far. Reproducible: Always andreas.eckstein@gmx.net 2007-11-11 20:02:23 0000 Created an attachment (id=135761) Q35 boot fix patch mpagano@gentoo.org 2007-11-12 14:24:14 0000 There seems to still be quite a bit of discussions concerning the validity of this patch. I think it might be worth it to keep an eye on the upstream thread until an accepted patch is proposed and committed. mpagano@gentoo.org 2007-11-23 18:23:41 0000 Please reopen this bug if a patch that fixes this get accepted upstream. We will then attempt to backport the patch to older kernels that we still support at that time. http://dev.gentoo.org/~dsd/genpatches/faq.htm dsd@gentoo.org 2007-11-25 19:51:10 0000 Mike: have you confirmed that upstream has everything under control and doesn't need our help? Unless upstream tell us to go away, we should pester them and offer resources -- namely Andreas who would hopefully test candidate patches should they appear. We shouldn't close this unless there is nothing we can do. mpagano@gentoo.org 2007-11-26 01:35:02 0000 If you have the time, read the thread from the original description. The discussion seems to have lost some steam and stopped. If you think after reading there is more that we can do, we can reopen this. dsd@gentoo.org 2007-11-26 21:46:24 0000 we can at least attempt to breathe some life back into the issue andreas.eckstein@gmx.net 2007-12-16 00:58:40 0000 The problem has been brought to the attention of the master himself, and with any look above patch will get included soon (preliminarily at least): http://lkml.org/lkml/2007/12/6/368 andreas.eckstein@gmx.net 2007-12-16 00:59:16 0000 Luck, not look, of course. andreas.eckstein@gmx.net 2008-01-26 21:26:42 0000 For the record: The fix is in mm-sources and might make it into 2.6.25: http://www.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.24-rc6/2.6.24-rc6-mm1/broken-out/pci-disable-decoding-during-sizing-of-bars.patch The only thing that troubles me is that my name is on the top of the page (they took it from this bug), while the patch is by Matthew Wilcox... dsd@gentoo.org 2008-01-26 22:04:46 0000 thanks for the update and your efforts, I just sent an email asking Andrew to correct that. dsd@gentoo.org 2008-02-12 16:53:04 0000 Created an attachment (id=143323) new patch Rumour has it that this patch solves the issue, and it's already upstream. Please could you apply it (*instead* of any others) to 2.6.24 and let us know what happens? andreas.eckstein@gmx.net 2008-02-16 21:29:08 0000 Daniel, the patch works well here. dsd@gentoo.org 2008-02-16 21:57:39 0000 Great, thanks for testing. Queued this up for next 2.6.24 release. Not going to backport to 2.6.23 because the code the patch touches on has changed too much. dsd@gentoo.org 2008-02-26 17:10:46 0000 Fixed in genpatches-2.6.24-4 (gentoo-sources-2.6.24-r3), thanks for testing 135761 2007-11-11 20:02 0000 Q35 boot fix patch q35.pci.patch text/plain ZGlmZiAtLWdpdCBhL2RyaXZlcnMvcGNpL3Byb2JlLmMgYi9kcml2ZXJzL3BjaS9wcm9iZS5jCmlu ZGV4IDM0YjhkYWUuLjUxZWY0NTAgMTAwNjQ0Ci0tLSBhL2RyaXZlcnMvcGNpL3Byb2JlLmMKKysr IGIvZHJpdmVycy9wY2kvcHJvYmUuYwpAQCAtMTgwLDExICsxODAsMjYgQEAgc3RhdGljIGlubGlu ZSBpbnQgaXNfNjRiaXRfbWVtb3J5KHUzMiBtYXNrKQogCXJldHVybiAwOwogfQogCisvKgorICog U2l6aW5nIFBDSSBCQVJzIHJlcXVpcmVzIHVzIHRvIGRpc2FibGUgZGVjb2RpbmcsIG90aGVyd2lz ZSB3ZSBtYXkgcnVuCisgKiBpbnRvIGNvbmZsaWN0cyB3aXRoIG90aGVyIGRldmljZXMgd2hpbGUg dHJ5aW5nIHRvIHNpemUgdGhlIEJBUi4gIE5vcm1hbGx5CisgKiB0aGlzIGlzbid0IGEgcHJvYmxl bSwgYnV0IGl0IGhhcHBlbnMgb24gc29tZSBtYWNoaW5lcyBub3JtYWxseSwgYW5kIGNhbgorICog aGFwcGVuIG9uIG90aGVycyBkdXJpbmcgUENJIGRldmljZSBob3RwbHVnLiAgRG9uJ3QgZGlzYWJs 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