reassign 277298 util-linux tags 277298 sarge thanks The implemention of a user-space timeout for buggy RTC chips, suggested by Paul Gortmaker, is in the hwclock supplied by util-linux as of 2.12b-1 (upstream as of 2.12a). This appears to be in unstable but not sarge. Accordingly I am reassigning this bug to util-linux and marking it sarge.
On Tue, May 03, 2005 at 08:25:41PM -0700, Paul Gortmaker wrote: > At a glance this sounds like the case of having the HPET enabled causes > the RTC IRQ functionality to become crippled or non-functional. The > concept of hwclock using alarm or similar to handle broken and > misconfigured hardware is a sensible idea. > > Paul. > > --- Horms <[EMAIL PROTECTED]> wrote: > > > Hi, > > > > I am doing some investigations into a problem that has been reported > > with RTC on some Dell Machines. It seems to be relate exclusively to > > machines that have the 8208CA ICH3 I/O Hub. I have been able to > > reproduce this on a Dell 8400, which I have access to today while I am > > on holidays. The output of lspci -v -x is attached. > > > > For reference this problem is being tracked at > > http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=277298 > > > > There are various user-space work arounds for this problem, but I would > > like to offer what I have discovered from a brief poke-around in rtc.c. > > > > An strace of hwclock looks a bit like this > > > > open("/dev/rtc", O_RDONLY|O_LARGEFILE); > > ioctl(3, RTC_UIE_ON, 0); > > read(3, ... > > > > the read never returns. > > > > If my reading of the code is correct, what is occuring is that > > rtc_read() is in its do/while loop, waiting to be rescheduled. This > > should occur once an interupt is handled by rtc_interrupt(), but I guess > > that this is not occuring. Any insights into why this might be happening > > would be more than welcome. > > > > The kernel in question is Ubuntu's 2.6.8.1, the rtc.c is identical from > > what was in linus' tree this morning. The config is also attached. > > > > Please CC me on replies > > > > Thanks > > > > > > __________________________________________________ > Do You Yahoo!? > Tired of spam? Yahoo! Mail has the best spam protection around > http://mail.yahoo.com -- Horms -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
