Date: Sat, 31 May 2008 16:10:51 -0300 From: Mario Lobo <mlobon@ig.com.br> To: freebsd-questions@freebsd.org Subject: downgrading /sys/src Message-ID: <200805311610.51979.mlobon@ig.com.br>
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This may sound wierd but let me explain why. On last may/26, I added a Sound Blaster Live to my machine and I wanted to= =20 activate the midi interface of the emu10kx driver. I know there were some=20 memory and timming problems but I wanted to experiment. So I did a csup to= =20 7_CURRENT (which is the tag I always use) then edited emu10kx to coment out= =20 the #if 0 that excludes the midi code. I took the oportunity to coment the= =20 drivers I did not need to make the kernel smaller. Recompiled and loaded=20 emu10kx from loader.conf. the Kernel crashed right after the acpi_hpet=20 driver load. But by loading emu10kx later, there was no crash and SB board= =20 worked fine. A hunch told me to save kernel.old so I moved it to kernel.good which is: =46reeBSD lobo 7.0-STABLE FreeBSD 7.0-STABLE #1: Thu May 22 18:32:28 BRT 20= 08 =20 root@lobo:/usr/src/sys/i386/compile/LOBO i386 After that I went on to make some DVD backups with k3b which ALWAYS worked= =20 fine and now, after this upgrade, k3b keeps crashing without finishing.=20 Software and device buffers usage behaved erratically, and even if it doesn= 't=20 crash, it stops in around 30% with a write error. I lost a few DVDs, since = I=20 suspected the DVD+RW may have had something to do with the problem. I=20 recompiled k3b (and the other ports around it) but results were the same. Anyway, after several unsuccessful attempts to correct the problem by=20 removing/re-adding kernel drivers, recompiles and even removing the SB boar= d,=20 I decided to move /boot/kernel to kernel.new, and copied kernel.good to=20 kernel and voil=E1 ! Everything went back to normal and worked fine! What I want to do is to make a copy of my current /src/sys, revert it back = to=20 what it was in may/22 (kernel.good) and compare it with the current /src/sy= s=20 to see what changed that provoked this behavior. I suspect of ata and memor= y=20 handling changes but it's just a guess. I'd have to have both sources to=20 compare. So my question is: How can I get my /src/sys back to what it was in may/22? can this be done?=20 sorry for the long post and thanks =2D-=20 Mario Lobo http://www.mallavoodoo.com.br =46reeBSD since version 2.2.8 [not Pro-Audio.... YET!!] (99,7% winedows FRE= E)
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