<div dir="ltr">Guys,<div><br></div><div>I don't want to be rude but, Linux 3.13 sucks a lot.</div><div><br></div><div>I'm wondering here, for God's sake, why Ubuntu 14.04 comes with this lame kernel? What Ubuntu Kernel Team have in mind?!</div>
<div><br></div><div>Mark Shuttlework <u>must say something about this situation</u>. What he is gonna do? I really t want to know that.</div><div><br></div><div>I'm a HUGE fan of Ubuntu, and I mean it, I have no plans to switch off Ubuntu and I'll stick with 14.04 but, definitely, Linux 3.13 was a bad, bad choice for a LTS version like Trusty.</div>
<div><br></div><div>I'm facing a massive number of problems with this kernel, nights awake... And I'm not alone.</div><div><br></div><div>---</div><div>List of problems:</div><div><br></div><div><a href="http://sebastian.marsching.com/blog/archives/133-Trouble-after-installing-linux-generic-lts-trusty-in-Ubuntu-12.04-LTS.html">http://sebastian.marsching.com/blog/archives/133-Trouble-after-installing-linux-generic-lts-trusty-in-Ubuntu-12.04-LTS.html</a><br>
</div><div><br></div><div><a href="http://sebastian.marsching.com/blog/archives/134-Linux-KVM-Problems-with-Ubuntu-14.04-LTS-Kernel-3.13.0-30.html">http://sebastian.marsching.com/blog/archives/134-Linux-KVM-Problems-with-Ubuntu-14.04-LTS-Kernel-3.13.0-30.html</a><br>
</div><div><br></div><div><a href="http://serverfault.com/questions/598257/ubuntu-14-04-kvm-host-not-allocating-kvm-guest-correctly-high-load">http://serverfault.com/questions/598257/ubuntu-14-04-kvm-host-not-allocating-kvm-guest-correctly-high-load</a><br>
</div><div><br></div><div><a href="http://serverfault.com/questions/609881/windows-server-2012-on-kvm-on-ubuntu-14-04-runs-well-for-a-while-and-then-slows/612084#612084">http://serverfault.com/questions/609881/windows-server-2012-on-kvm-on-ubuntu-14-04-runs-well-for-a-while-and-then-slows/612084#612084</a><br>
</div><div><br></div><div>linux-image-3.13.0-29-generic - soft lockup in kvm guests:<br></div><div><a href="https://bugs.launchpad.net/ubuntu/+source/linux-lts-trusty/+bug/1333553">https://bugs.launchpad.net/ubuntu/+source/linux-lts-trusty/+bug/1333553</a><br>
</div><div><br></div><div>guest hang due to missing clock interrupt:<br></div><div><a href="https://bugs.launchpad.net/ubuntu/+source/qemu/+bug/1307473">https://bugs.launchpad.net/ubuntu/+source/qemu/+bug/1307473</a><br>
</div>
<div><br></div><div>[Supermicro X9DR3-F] Virtual machines hang in kernel 3.13:<br></div><div><a href="https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1332409">https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1332409</a><br>
</div><div><br></div><div>KVM guests getting slow by time (Linux 3.13.0-29-generic x86_64):<br></div><div><div><a href="https://bugs.launchpad.net/ubuntu/+source/qemu/+bug/1341195">https://bugs.launchpad.net/ubuntu/+source/qemu/+bug/1341195</a></div>
</div><div><br></div><div>Filled by myself - Ubuntu 14.04 + QEmu 2.0 + KSM = 1, makes Windows 2008 R2 guests to crash (BSOD):</div><div><div><a href="https://bugs.launchpad.net/ubuntu/+source/qemu/+bug/1338277">https://bugs.launchpad.net/ubuntu/+source/qemu/+bug/1338277</a></div>
</div><div>---</div><div><br></div><div>I just installed a lot of QEmu 2.0 Hypervisors with Trusty, including a brand new Cloud Computing with OpenStack IceHouse and, guess what?! Lots of problems... Because of Linux 3.13.</div>
<div><br></div><div><u>This is a unprecedented situation</u>, Canonical must provide a new Kernel version for Trusty ASAP! This is affecting hundreds of people around the world that are trusting in Trusty but, it is not trustable right now. :-/</div>
<div><br></div><div>As a workaround, I backported the Kernel from Utopic, since I need the bnx2 kernel module (linux extra), I can not just use the mainline packages as-is...</div><div><br></div><div>---</div><div>Manually backporting Utopic's Kernel into Trusty:</div>
<div><br></div><div>1- Add the following line to your Trusty's /etc/apt/sources.list:</div><div><br></div><div><div>deb-src <a href="http://us.archive.ubuntu.com/ubuntu/">http://us.archive.ubuntu.com/ubuntu/</a> utopic main restricted universe multiverse</div>
</div><div><br></div><div>2- Run:</div><div><br></div><div>apt-get update</div><div>apt-get install fakeroot</div><div>apt-get build-dep linux</div><div>mkdir linux/source -p</div><div>cd linux/source</div><div>apt-get source linux</div>
<div>cd linux-3.16.0</div><div>dpkg-buildpackage -rfakeroot -uc -us</div><div><br></div><div>3- Install Linux via "dpkg -i linux..."</div><div>---</div><div><br></div><div>IMPORTANT NOTE: I still did not tested this Linux 3.16 from Utopic on Trusty but, at this point, anything is better than Linux 3.13. I know that my environment is terrible with 3.13 and I'll report here if it becomes better with Linux 3.16.</div>
<div><br></div><div>Again, Canonical, please, say something about this.</div><div><br></div><div>As I said, I'm a huge fan of Ubuntu and I'm waiting to see what Canonical will do about this.... Canonical, your turn.</div>
<div><br></div><div>Best Regards,</div><div>Thiago Martins</div></div>