Andrew Morton wrote:
> ftp://ftp.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.8.1/2.6.8.1-mm3/
> 
> - Added three more bk trees:
> 
> 	bk-fb:		Some ARM framebuffer driver (rmk)
> 	bk-mmc:		ARM-specific media drivers(?)
> 	bk-watchdog:	watchdog drivers
> 
> - I'm totally unclear on what's happening with the release_task
>   sleep-while-atomic bug, and with the CPU hotplug BUG.  This kernel will
>   probably emit might_sleep warnings.  Turn off CONFIG_PREEMPT if it gets
>   irritating.
> 
> - Added Nick Piggin's CPU scheduler to see what happens.  See inside the
>   patch for details.  Please test, benchmark, report.
> 
> - This is (very) lightly tested.  Mainly a resync with various parties.
> 

Not sure what does what - I'm in the process of going back to 2.6.8.1, and see if any of this goes away..

1) the ub device kills my SanDisk 8 in 1 reader (SDDR-88)  I have to yank it out of the USB port to fix it.  fixed by removing the UB device from my config outright.

2) do not try to modprobe -r ub; it will do wonky things to your machine (I tried in a KDE Konsole, and lost the keyboard, and the terminal just scrolled blank lines..)

3) Interactivity performance when compiling a kernel (make rpm) sucks.  I have a Dell Poweredge 400SC, with a Hyper threaded P4/1GB of ram, ATI Radeon 9600 based video.  Load average jumps to the 4's, and stays there - while each cpu in the hyper thread shows about 50% idle time.  Mouse pointer jumps all over the place, mouse clicks are lost, menus are slow to drop down, etc..

4) why does this happen (hdd is reported to be PIO, but it's not..)

ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx
ICH5: IDE controller at PCI slot 0000:00:1f.1
ACPI: PCI interrupt 0000:00:1f.1[A] -> GSI 18 (level, low) -> IRQ 18
ICH5: not 100% native mode: will probe irqs later
    ide0: BM-DMA at 0xffa0-0xffa7, BIOS settings: hda:DMA, hdb:DMA
    ide1: BM-DMA at 0xffa8-0xffaf, BIOS settings: hdc:DMA, hdd:pio

[root@pinkie root]# /sbin/hdparm /dev/hdd

/dev/hdd:
 multcount    = 16 (on)
 IO_support   =  0 (default 16-bit)
 unmaskirq    =  0 (off)
 using_dma    =  1 (on)
 keepsettings =  0 (off)
 readonly     =  0 (off)
 readahead    = 256 (on)
 geometry     = 24321/255/63, sectors = 390721968, start = 0

thomas