Hibernation and time and dhcp

Hibernation and time and dhcp

[Michal Semler]

Hi guys,

with 2.6.9 hibernation to disk finally works! Thanks
To ram it still don't work, system starts with lcd disabled - but it is 
another story.

I have now this problem - when I hibernate and then system is started up in 
other company, it don't update time and shows still for example 14:00 - when 
I rehibernate for example in 20:00 - could you ask bios for current time? 
It's better to have bad time about few seconds instead of hours.

Same problem with dhcp - it should ask for IP when rehibernate.

Thanks for fixing

Michal

Re: Hibernation and time and dhcp

[Stefan Schweizer]

hibernate.conf:

### clock
SaveClock yes


OnResume 20  dhcpcd -n



On Wed, 20 Oct 2004 20:45:24 +0200, Michal Semler <cijoml@volny.cz> wrote:
> Hi guys,
> 
> with 2.6.9 hibernation to disk finally works! Thanks
> To ram it still don't work, system starts with lcd disabled - but it is
> another story.
> 
> I have now this problem - when I hibernate and then system is started up in
> other company, it don't update time and shows still for example 14:00 - when
> I rehibernate for example in 20:00 - could you ask bios for current time?
> It's better to have bad time about few seconds instead of hours.
> 
> Same problem with dhcp - it should ask for IP when rehibernate.
> 
> Thanks for fixing
> 
> Michal
> -
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Re: Hibernation and time and dhcp

[Denis Vlasenko]

On Wednesday 20 October 2004 21:45, Michal Semler wrote:
> Hi guys,
> 
> with 2.6.9 hibernation to disk finally works! Thanks
> To ram it still don't work, system starts with lcd disabled - but it is 
> another story.
> 
> I have now this problem - when I hibernate and then system is started up in 
> other company, it don't update time and shows still for example 14:00 - when 
> I rehibernate for example in 20:00 - could you ask bios for current time? 
> It's better to have bad time about few seconds instead of hours.
> 
> Same problem with dhcp - it should ask for IP when rehibernate.

These should be handled in userspace. You can put together
some simple shell script to do it with (hwclock or ntpdate) and [u]dhcp*
--
vda

Re: Hibernation and time and dhcp

[Pavel Machek]

Hi!

> with 2.6.9 hibernation to disk finally works! Thanks
> To ram it still don't work, system starts with lcd disabled - but it is 
> another story.
> 
> I have now this problem - when I hibernate and then system is started up in 
> other company, it don't update time and shows still for example 14:00 - when 
> I rehibernate for example in 20:00 - could you ask bios for current time? 
> It's better to have bad time about few seconds instead of hours.
> 
> Same problem with dhcp - it should ask for IP when rehibernate.

Known bug and I posted patch at least to acpi list few hours ago.

									Pavel


-- 
People were complaining that M$ turns users into beta-testers...
...jr ghea gurz vagb qrirybcref, naq gurl frrz gb yvxr vg gung jnl!

Re: Hibernation and time and dhcp

[Michal Semler]

Dne čt 21. října 2004 14:31 Denis Vlasenko napsal(a):
> On Wednesday 20 October 2004 21:45, Michal Semler wrote:
> > Hi guys,
> >
> > with 2.6.9 hibernation to disk finally works! Thanks
> > To ram it still don't work, system starts with lcd disabled - but it is
> > another story.
> >
> > I have now this problem - when I hibernate and then system is started up
> > in other company, it don't update time and shows still for example 14:00
> > - when I rehibernate for example in 20:00 - could you ask bios for
> > current time? It's better to have bad time about few seconds instead of
> > hours.
> >
> > Same problem with dhcp - it should ask for IP when rehibernate.
>
> These should be handled in userspace. You can put together
> some simple shell script to do it with (hwclock or ntpdate) and [u]dhcp*
> --
> vda

Yes, it's possible, but many programs crashes when time is moved about hours 
or days. And till time they will be repaired, we should ask for time BIOS to 
have little time difference.

Michal

Re: Hibernation and time and dhcp

[Pavel Machek]

Hi!

> > with 2.6.9 hibernation to disk finally works! Thanks
> > To ram it still don't work, system starts with lcd disabled - but it is 
> > another story.
> > 
> > I have now this problem - when I hibernate and then system is started up in 
> > other company, it don't update time and shows still for example 14:00 - when 
> > I rehibernate for example in 20:00 - could you ask bios for current time? 
> > It's better to have bad time about few seconds instead of hours.
> > 
> > Same problem with dhcp - it should ask for IP when rehibernate.
> 
> Known bug and I posted patch at least to acpi list few hours ago.

Here it is...

							Pavel

--- clean/arch/i386/kernel/time.c	2004-10-01 00:29:59.000000000 +0200
+++ linux/arch/i386/kernel/time.c	2004-10-19 15:16:14.000000000 +0200
@@ -319,7 +319,7 @@
 	return retval;
 }
 
-static long clock_cmos_diff;
+static long clock_cmos_diff, sleep_start;
 
 static int time_suspend(struct sys_device *dev, u32 state)
 {
@@ -328,6 +328,7 @@
 	 */
 	clock_cmos_diff = -get_cmos_time();
 	clock_cmos_diff += get_seconds();
+	sleep_start = get_cmos_time();
 	return 0;
 }
 
@@ -335,10 +336,13 @@
 {
 	unsigned long flags;
 	unsigned long sec = get_cmos_time() + clock_cmos_diff;
+	unsigned long sleep_length = get_cmos_time() - sleep_start;
+
 	write_seqlock_irqsave(&xtime_lock, flags);
 	xtime.tv_sec = sec;
 	xtime.tv_nsec = 0;
 	write_sequnlock_irqrestore(&xtime_lock, flags);
+	jiffies += sleep_length * HZ;
 	return 0;
 }
 


-- 
People were complaining that M$ turns users into beta-testers...
...jr ghea gurz vagb qrirybcref, naq gurl frrz gb yvxr vg gung jnl!

Re: Hibernation and time and dhcp

[Denis Vlasenko]

On Friday 22 October 2004 02:13, Michal Semler wrote:

> > These should be handled in userspace. You can put together
> > some simple shell script to do it with (hwclock or ntpdate) and [u]dhcp*
> 
> Yes, it's possible, but many programs crashes when time is moved about hours 
> or days. And till time they will be repaired, we should ask for time BIOS to 
> have little time difference.

Those programs are buggy.
--
vda