On Sunday 22 November 2009, Maxim Levitsky wrote: > I had just disabled the AC driver, yeah, got similar backtrace from acpi > video driver. > > Ok, enough, pattern is visible. > The common point is that all backtraces lead to > acpi_ex_acquire_global_lock > > According to sources, it is only taken on access to ACPI hardware ranges > that are marked as 'Lock'. > > On my system only EC space is marked as such, thus this leads me to two > conclusions. > > Ether during suspend EC access isn't synced (this is, EC transaction is > still pending),or that EC gets busted (suprise...) on resume or suspend, > and first read/write cycle to/from it never finishes. > > I am using hibernate cycles using 'reboot' mechanism. OK, at this point I think it's better to file a bug report in the kernel and assign it to ACPI (please add my address to the CC list in there). Thanks, Rafael _______________________________________________ linux-pm mailing list linux-pm@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/linux-pm
