[Bug 361663] New: Wrong total remaining battery time of " Powersave Informations Dialog" on HP Compaq nx6125
https://bugzilla.novell.com/show_bug.cgi?id=361663 Summary: Wrong total remaining battery time of "Powersave Informations Dialog" on HP Compaq nx6125 Product: openSUSE 10.3 Version: Final Platform: x86-64 OS/Version: openSUSE 10.3 Status: NEW Severity: Normal Priority: P5 - None Component: Mobile Devices AssignedTo: zoz@novell.com ReportedBy: Tob_Sch@gmx.de QAContact: qa@suse.de Found By: --- This is the continuation of Bug 347219 I'm running openSUSE 10.3 x86_64 with the newest patches on a HP Compaq nx6125 notebook with a primary and an additional travel battery. When the Primary battery is full and the Travel battery is discharging, the remaining battery time of both batteries (Travel + Primary) is always as big as the remaining battery time of the discharging Travel battery. With former versions of OpenSUSE, this worked, I remember. Before closing this bug again with the words "there is no way to calculate the time correctly for both batteries atm.", please read this: Here'is a better method for calculating the total remaining battery time (t12) of the primary (B1) and the travel battery (B2) together: P=U*I <=> I=P/U W=P*t Q=I*t <=> t=Q/I t=Q/I=Q*U/P case B1 discharging, B2 charged: case B1 charged, B2 discharging: t12 = t1 + t2 = Q1/I1 + Q2/I2 = Q1*U1/P1 + Q2*U2/P2 => assuming that P=P1=P2 over remaining time, assuming that U is constant over remaining time (I know in reality, U decreases with decreasing remaining time ;-) => (Q1*U1 + Q2*U2)/P => assuming that I1=0 or I2=0 => t12 = (Q1*U1 + Q2*U2)/(U1*I1 + U2*I2) where t12=total remaining battery time of primary and travel battery together Q1=/proc/acpi/battery/C17B/state:remaining capacity Q2=/proc/acpi/battery/C17C/state:remaining capacity U1=/proc/acpi/battery/C17B/state:present voltage U2=/proc/acpi/battery/C17C/state:present voltage I1=/proc/acpi/battery/C17B/state:present rate I2=/proc/acpi/battery/C17C/state:present rate Please don't hit me, I know, that this is only an approximation (but much better than the status quo of "KPowersave Informations dialog"s total remaining battery time, if two batteries were residing in a notebook ;-) If you want more precision, you have always got to record, keep and evaluate the last complete U-Q-diagrams of both batteries to calculate the integral (assuming that this graph is independent from the I-t-diagrams ;-) case B1 discharging, B2 discharging: (perhaps, no notebook has this discharging design ) t12 = t1 * t2 = Q1/I1 + Q2/I2 -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.
https://bugzilla.novell.com/show_bug.cgi?id=361663 User Tob_Sch@gmx.de added comment https://bugzilla.novell.com/show_bug.cgi?id=361663#c1 --- Comment #1 from Tob Sch <Tob_Sch@gmx.de> 2008-02-13 15:46:15 MST --- Created an attachment (id=194782) --> (https://bugzilla.novell.com/attachment.cgi?id=194782) Screenshot from "KPowersave Informations Dialog" with wrong total battery time -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.
https://bugzilla.novell.com/show_bug.cgi?id=361663 User Tob_Sch@gmx.de added comment https://bugzilla.novell.com/show_bug.cgi?id=361663#c2 --- Comment #2 from Tob Sch <Tob_Sch@gmx.de> 2008-02-13 15:49:18 MST --- Created an attachment (id=194783) --> (https://bugzilla.novell.com/attachment.cgi?id=194783) Output of command "grep . /proc/acpi/battery/*/*" -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.
https://bugzilla.novell.com/show_bug.cgi?id=361663 Christian Zoz <zoz@novell.com> changed: What |Removed |Added ---------------------------------------------------------------------------- AssignedTo|zoz@novell.com |dkukawka@novell.com -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.
https://bugzilla.novell.com/show_bug.cgi?id=361663 User dkukawka@novell.com added comment https://bugzilla.novell.com/show_bug.cgi?id=361663#c4 Danny Kukawka <dkukawka@novell.com> changed: What |Removed |Added ---------------------------------------------------------------------------- Component|Mobile Devices |Mobile Devices Product|openSUSE 10.3 |openSUSE 11.0 Version|Final |Alpha 0 --- Comment #4 from Danny Kukawka <dkukawka@novell.com> 2008-02-21 08:39:49 MST --- 1) Your assumptions are wrong. at least the vast majority of laptops don't have a rate for the battery which isn't discharging. 2) HAL don't have a 'overall battery' object which could handle this and it's a) not easy to implement into the existing structur and b) I'm not sure if this is really wanted 3) I don't like to add this to KPowersave because it make it more complex then really needed (because it would need to catch and handle all the existing corner cases, need code for smoothing the time etc.) 4) this is (because of 1-3) a WONTFIX for 10.3 and not sure if we implement it into 11.0 since there are more important things like the QT4/KDE4 port. -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.
https://bugzilla.novell.com/show_bug.cgi?id=361663 User Tob_Sch@gmx.de added comment https://bugzilla.novell.com/show_bug.cgi?id=361663#c5 --- Comment #5 from Tob Sch <Tob_Sch@gmx.de> 2008-02-21 09:00:46 MST --- You don't need the rate for the battery, which isn't discharging, the "present rate" of the discharging battery is simply 0. You only need the "remaining capacity" and the "present voltage" of the battery which is discharging, you mean that one or both of this values aren't available? -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.
https://bugzilla.novell.com/show_bug.cgi?id=361663 User Tob_Sch@gmx.de added comment https://bugzilla.novell.com/show_bug.cgi?id=361663#c6 --- Comment #6 from Tob Sch <Tob_Sch@gmx.de> 2008-02-21 09:02:04 MST --- sorry, correction: .. the "present rate" of the not discharging battery is simply 0. -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.
https://bugzilla.novell.com/show_bug.cgi?id=361663 User dkukawka@novell.com added comment https://bugzilla.novell.com/show_bug.cgi?id=361663#c7 --- Comment #7 from Danny Kukawka <dkukawka@novell.com> 2008-02-21 09:20:36 MST --- Also this assumtion must not be correct. Battery could have no voltage (as rate) info until charging/discharging (we already seen such cases) and they could maybe have (theoretically) different volatage values (because such calculation have to work with all kind of batteries as e.g. als UPS) This all is really complex (which several corner cases) and at least KPowersave don't rely on time information for any of it's actions. It only rely on the percentage info which is correct. So it's more nice to have (which means it has atm no priority, sorry) -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.
https://bugzilla.novell.com/show_bug.cgi?id=361663 User Tob_Sch@gmx.de added comment https://bugzilla.novell.com/show_bug.cgi?id=361663#c8 --- Comment #8 from Tob Sch <Tob_Sch@gmx.de> 2008-02-21 09:40:19 MST --- Ok, you're right, under this circumstances my proposal would be too far away from a universally valid solution. I'm at a loss how the solve the problem of the missing "present voltage" value... -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.
https://bugzilla.novell.com/show_bug.cgi?id=361663 User dkukawka@novell.com added comment https://bugzilla.novell.com/show_bug.cgi?id=361663#c9 Danny Kukawka <dkukawka@novell.com> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |RESOLVED Resolution| |FEATURE Status Whiteboard| |FATE#303749 --- Comment #9 from Danny Kukawka <dkukawka@novell.com> 2008-04-29 03:29:06 MST --- This need to be fixed in HAL or may in an other upcomming powermanagement daemon in the future. I close this bug with FEATURE for now until we have something usefull. -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.
https://bugzilla.novell.com/show_bug.cgi?id=361663 User dkukawka@novell.com added comment https://bugzilla.novell.com/show_bug.cgi?id=361663#c10 --- Comment #10 from Danny Kukawka <dkukawka@novell.com> 2008-06-13 12:56:25 MDT --- Btw. I filled a fate request #303749 for this feature. -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.
https://bugzilla.novell.com/show_bug.cgi?id=361663 User dkukawka@novell.com added comment https://bugzilla.novell.com/show_bug.cgi?id=361663#c11 Danny Kukawka <dkukawka@novell.com> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |pablo@blueoakdb.com --- Comment #11 from Danny Kukawka <dkukawka@novell.com> 2008-06-13 12:57:34 MDT --- *** Bug 399799 has been marked as a duplicate of this bug. *** https://bugzilla.novell.com/show_bug.cgi?id=399799 -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.
https://bugzilla.novell.com/show_bug.cgi?id=361663 User pablo@blueoakdb.com added comment https://bugzilla.novell.com/show_bug.cgi?id=361663#c12 Pablo Sanchez <pablo@blueoakdb.com> changed: What |Removed |Added ---------------------------------------------------------------------------- Severity|Enhancement |Normal --- Comment #12 from Pablo Sanchez <pablo@blueoakdb.com> 2008-06-20 14:50:14 MDT --- Hi, The disposition of this bug has been ... bugging me ... :) ... for a while. I don't think it should be marked as an enhancement. FWIW, on this laptop, when I'm on battery (I have two batteries) and I'm running a Windows Virtual Machine, it correctly detects both batteries and displays an accurate time remaining. Further, when I used to use Windows (albeit on on this laptop), it would successfully report `time remaining' when I had two batteries. I'm going to mark this as a `normal' bug and if it's overwritten, well, at least I said what I wanted to say. :) btw, I do appreciate everything the good folks have done with this latest release. It's quite nice. -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.
https://bugzilla.novell.com/show_bug.cgi?id=361663 User dkukawka@novell.com added comment https://bugzilla.novell.com/show_bug.cgi?id=361663#c13 Danny Kukawka <dkukawka@novell.com> changed: What |Removed |Added ---------------------------------------------------------------------------- Severity|Normal |Enhancement --- Comment #13 from Danny Kukawka <dkukawka@novell.com> 2008-06-21 05:03:14 MDT --- This is an enhancement because we filled a FATE request for it. Btw. the bug is closed, changing the severity make no sense. -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.
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