This email lists some known regressions in 2.6.21-rc1 compared to 2.6.20 that are not yet fixed in Linus' tree. If you find your name in the Cc header, you are either submitter of one of the bugs, maintainer of an affectected subsystem or driver, a patch of you caused a breakage or I'm considering you in any other way possibly involved with one or more of these issues. Due to the huge amount of recipients, please trim the Cc when answering. Subject : ThinkPad T60: system doesn't come out of suspend to RAM (CONFIG_NO_HZ) References : http://lkml.org/lkml/2007/2/22/391 Submitter : Michael S. Tsirkin <mst at mellanox.co.il> Thomas Gleixner <tglx at linutronix.de> Handled-By : Ingo Molnar <mingo at elte.hu> Status : unknown Subject : kernel BUG at kernel/time/tick-sched.c:168 (CONFIG_NO_HZ) References : http://lkml.org/lkml/2007/2/16/346 Submitter : Michal Piotrowski <michal.k.k.piotrowski at gmail.com> Handled-By : Thomas Gleixner <tglx at linutronix.de> Status : problem is being debugged Subject : BUG: soft lockup detected on CPU#0 NOHZ: local_softirq_pending 20 References : http://lkml.org/lkml/2007/2/20/257 Submitter : Michal Piotrowski <michal.k.k.piotrowski at gmail.com> Handled-By : Thomas Gleixner <tglx at linutronix.de> Ingo Molnar <mingo at elte.hu> Status : problem is being debugged Subject : i386: no boot with nmi_watchdog=1 (clockevents) References : http://lkml.org/lkml/2007/2/21/208 Submitter : Daniel Walker <dwalker at mvista.com> Caused-By : Thomas Gleixner <tglx at linutronix.de> commit e9e2cdb412412326c4827fc78ba27f410d837e6e Handled-By : Thomas Gleixner <tglx at linutronix.de> Status : problem is being debugged