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Recently I updated my linux kernel from 3.0.0-17 to 3.0.0-18. And now chromium keeps giving me a segmentation fault and so does ubuntu-bug and even nautilus. Now I want to downgrade back to 3.0.0-17 until the bug is fixed. So how do I do that?

I run ubuntu11.10 32-bit.

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My problem's been resolved by upgrading to 3.0.0-19. –  tamimym Apr 11 '12 at 3:46

2 Answers 2

If you recently installed a new kernel your old kernel should still be installed as well. You should be able to interrupt the boot and select a previous kernel from the bootloader menu; for grub (the default bootloader on standard PC systems) hold SHIFT as the BIOS finishes and then select Previous Kernels and pick a known good kernel from there.

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Are you sure that its due to kernel upgrade ? If you are sure, follow this How to downgrade the Kernel on 11.10 . Check this thread as well Ubuntu 11.10 all browsers crashing after upgrade - Since yesterday

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I've already tried that, it didn't work so I asked this question. I'm quite sure it's because of the kernel upgrade. I found the bug on launchpad:bugs.launchpad.net/ubuntu/+source/linux/+bug/972821 –  tamimym Apr 6 '12 at 10:21
    
For those interested, a new kernel that fixes that bug has now been released. –  neon_overload May 18 '12 at 0:47

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