Yum kernel upgrades don't boot

[Bill Davidsen]

It appears the when a kernel upgrade is applied by yum, the rebuild of 
grub2.conf seems to reset the kernel command lines to default, dropping options 
to use working video and network drivers and stable clocks. Even the vital 
"nomodeset" option is dropped from the old stanzas in the original grub2.config. 
Is this part of the war on using vendor drivers? Booting into a system with an 
unstable clock, no video even text in runlevel 3, and no working network doesn't 
make a upgrade easy.

So is dropping the kernel command line options a bug, or deliberate policy?

-- 
Bill Davidsen <davidsen at tmr.com>
   We are not out of the woods yet, but we know the direction and have
taken the first step. The steps are many, but finite in number, and if
we persevere we will reach our destination.  -me, 2010