Hi, I can confirm that this is not a warning. It really indicates that a workaround for a BIOS bug is being applied.
The fact that it gets further with -B intel-iommu=no being applied indicates that there is some IOMMU involvement. Please file a bug and put me on the interest list. Vikram On Wednesday 20 January 2010 15:17:49 J?rgen Keil wrote: > > I'm trying to boot an Acer AS3810T-6827 > > from USB flash. I get the GRUB menu and the > > Solaris banner, followed by: > > > > WARNING: Mobile 4 Series chipset present, activating quirks > > > > WARNING: Setting RWBF forcefully > > > > It hangs at that point. > > A Toshiba Tecra A10 reports the same warnings > at boot time, but doesn't hang. So these warnings > seem to be harmless. > > Most likely it hangs after loading one of the drivers, > after these warnings have been reported. > > Try a verbose kernel boot with option "-v" to get > some more information what drivers are loaded > and where it hang. > > Or boot the kernel with options "-kdv" and > in kmdb use: > > moddebug/W 80000000 > > :c > > (see http://blogs.sun.com/dmick/entry/diagnosing_kernel_hangs_panics_with ) > -- FORTUNE'S GUIDE TO DEALING WITH REAL-LIFE SCIENCE FICTION: #2 What to do... if you get a phone call from Mars: Speak slowly and be sure to enunciate your words properly. Limit your vocabulary to simple words. Try to determine if you are speaking to someone in a leadership capacity, or an ordinary citizen. if he, she or it doesn't speak English? Hang up. There's no sense in trying to learn Martian over the phone. If your Martian really had something important to say to you, he, she or it would have taken the trouble to learn the language before calling. if you get a phone call from Jupiter? Explain to your caller, politely but firmly, that being from Jupiter, he, she or it is not "life as we know it". Try to terminate the conversation as soon as possible. It will not profit you, and the charges may have been reversed.
