This is a reply to Jos Collin's weird comment. What kind of a comment was that? Just waste your battery because - hey! - it will die on you anyway at some point in the future. How is battery life NOT important for a MOBILE COMPUTER?!? The whole point of a laptop IS to use its battery efficiently so that you can be independent power-wise at least for a limited amount of time.
On 10 February 2016 at 07:02, Jos Collin <[email protected]> wrote: > Hi, I'm not answering your question. But my suggestion is: don't bother > about your battery life. Because even if you get 10 hours now, it is going > to reduce slowly and reach 30 mins or 10 mins with in a few years. Then you > have to replace your battery with a new one. > > I had a battery that drains to 0% with in 30 secs. I replaced that in 2012 > with a 9 cell battery, when I started traveling with my laptop. The new > battery also drains to 0% within 30 secs now. > > So I advice you to forget about battery life and move on to other > important things. :-) > On 10-Feb-2016 11:05 AM, "Dwijesh Gajadur" <[email protected]> wrote: > >> Hi everyone. >> I have a Dell Inspiron 5559 laptop which has a 40WHr, 4-cell battery. On >> Windows 7 I get a battery life of 6-7 hours. On Ubuntu I get a battery life >> of 5 hours after using PowerTop. >> However on Debian I get only 3 hours of battery life. I have done >> calibration several times and for several hours but I get only 3 hours of >> battery life. >> >> When I do *powertop --calibrate *the following lines appears: >> >> root@debian:/# powertop --auto-tune >> Loaded 137 prior measurements >> Cannot load from file /var/cache/powertop/saved_parameters.powertop >> File will be loaded after taking minimum number of measurement(s) with >> battery only >> RAPL device for cpu 0 >> RAPL Using PowerCap Sysfs : Domain Mask f >> RAPL device for cpu 0 >> RAPL Using PowerCap Sysfs : Domain Mask f >> RAPL device for cpu 0 >> RAPL Using PowerCap Sysfs : Domain Mask f >> Devfreq not enabled >> Cannot load from file /var/cache/powertop/saved_parameters.powertop >> File will be loaded after taking minimum number of measurement(s) with >> battery only >> To show power estimates do 124 measurement(s) connected to battery only >> unknown op '{' >> Leaving PowerTOP >> >> root@debian:/# powertop --calibrate >> Loaded 87 prior measurements >> Cannot load from file /var/cache/powertop/saved_parameters.powertop >> File will be loaded after taking minimum number of measurement(s) with >> battery only >> RAPL device for cpu 0 >> RAPL Using PowerCap Sysfs : Domain Mask f >> RAPL device for cpu 0 >> RAPL Using PowerCap Sysfs : Domain Mask f >> RAPL device for cpu 0 >> RAPL Using PowerCap Sysfs : Domain Mask f >> Devfreq not enabled >> Cannot load from file /var/cache/powertoproot@debian:/# powertop >> --auto-tune >> Loaded 137 prior measurements >> Cannot load from file /var/cache/powertop/saved_parameters.powertop >> File will be loaded after taking minimum number of measurement(s) with >> battery only >> RAPL device for cpu 0 >> RAPL Using PowerCap Sysfs : Domain Mask f >> RAPL device for cpu 0 >> RAPL Using PowerCap Sysfs : Domain Mask f >> RAPL device for cpu 0 >> RAPL Using PowerCap Sysfs : Domain Mask f >> Devfreq not enabled >> Cannot load from file /var/cache/powertop/saved_parameters.powertop >> File will be loaded after taking minimum number of measurement(s) with >> battery only >> To show power estimates do 124 measurement(s) connected to battery only >> unknown op '{' >> Leaving PowerTOP >> >> root@debian:/# powertop --calibrate >> Loaded 87 prior measurements >> Cannot load from file /var/cache/powertop/saved_parameters.powertop >> File will be loaded after taking minimum number of measurement(s) with >> battery only >> RAPL device for cpu 0 >> RAPL Using PowerCap Sysfs : Domain Mask f >> RAPL device for cpu 0 >> RAPL Using PowerCap Sysfs : Domain Mask f >> RAPL device for cpu 0 >> RAPL Using PowerCap Sysfs : Domain Mask f >> Devfreq not enabled >> Cannot load from file /var/cache/powertop/saved_parameters.powertop >> File will be loaded after taking minimum number of measurement(s) with >> battery only >> Starting PowerTOP power estimate calibration >> Calibrating idle >> System is not available >> unknown op '{' >> To show power estimates do 174 measurement(s) connected to battery only >> System is not available >> Calibrating: disk usage >> Calibrating backlight >> .... device /sys/class/backlight/intel_backlight/brightness >> Calibrating idle >> System is not available >> System is not available >> Calibrating: CPU usage on 1 threads >> Calibrating: CPU usage on 4 threads >> Calibrating: CPU wakeup power consumption >> Calibrating: CPU wakeup power consumption >> Calibrating: CPU wakeup power consumption >> Calibrating USB devices >> .... device /sys/bus/usb/devices/1-5/power/control >> .... device /sys/bus/usb/devices/1-6/power/control >> .... device /sys/bus/usb/devices/1-8/power/control >> .... device /sys/bus/usb/devices/usb1/power/control >> .... device /sys/bus/usb/devices/usb2/power/control >> Calibrating radio devices >> .... device /sys/class/rfkill/rfkill0/soft >> .... device /sys/class/rfkill/rfkill1/soft >> .... device /sys/class/rfkill/rfkill0/soft >> .... device /sys/class/rfkill/rfkill1/soft >> Finishing PowerTOP power estimate calibration >> Parameters after calibration: >> >> >> Parameter state *Cannot load from file >> /var/cache/powertop/saved_parameters.powertop *and >> ---------------------------------- >> Value Name >> 1.17 alsa-codec-power (14) >> 1.02 backlight (4) >> 2.08 backlight-boost-100 (8) >> 0.75 backlight-boost-40 (6) >> 0.00 backlight-boost-80 (7) >> 1.97 backlight-power (5) >> 9.66 base power (83) >> 5.81 cpu-consumption (3) >> 24.29 cpu-wakeups (2) >> 0.00 disk-operations (85) >> 0.00 disk-operations-hard (84) >> 0.00 enp3s0-link*Cannot load from file >> /var/cache/powertop/saved_parameters.powertop *and -100 (20) >> 0.00 enp3s0-link-1000 (21) >> 0.00 enp3s0-link-high (22) >> 0.00 enp3s0-packets (23) >> 0.00 enp3s0-powerunsave (19) >> 5.58 enp3s0-up (18) >> 17.40 gpu-operations (17) >> 0.00 radio:hci0 (16) >> 0.00 radio:phy0 (15) >> 0.00 runtime-0000:00:00.0 (30) >> 0.00 runtime-0000:00:02.0 (31) >> 0.00 runtime-0000:00:14.0 (32) >> 0.00 runtime-0000:00:14.2 (33) >> 0.00 runtime-0000:00:15.0 (34) >> 0.00 runtime-0000:00:15.1 (35) >> 0.00 runtime-0000:00:16.0 (36) >> 0.00 runtime-0000:00:17.0 (37) >> 0.00 runtime-0000:00:1c.0 (38) >> 0.00 runtime-0000:00:1c.4 (39) >> 0.00 runtime-0000:00:1c.5 (40) >> 0.00 runtime-0000:00:1f.0 (41) >> 0.00 runtime-0000:00:1f.2 (42) >> 0.00 runtime-0000:00:1f.3 (43) >> 0.00 runtime-0000:00:1f.4 (44) >> 0.00 runtime-0000:01:00.0 (45) >> 0.00 runtime-0000:02:00.0 (46) >> 0.00 runtime-0000:03:00.0 (47) >> 0.00 runtime-ACPI0003:00 (77) >> 0.00 runtime-ACPI000C:00 (78) >> 0.00 runtime-DELLABCE:00 (72) >> 0.00 runtime-INT0800:00 (68) >> 0.00 runtime-INT33A1:00 (49) >> 0.00 runtime-INT344B:00 (48) >> 0.00 runtime-PNP0103:00 (76) >> 0.00 runtime-PNP0C09:00 (51) >> 0.00 runtime-PNP0C0A:00 (53) >> 0.00 runtime-PNP0C0B:00 (54) >> 0.00 runtime-PNP0C0B:01 (55) >> 0.00 runtime-PNP0C0B:02 (56) >> 0.00 runtime-PNP0C0B:03 (57) >> 0.00 runtime-PNP0C0B:04 (58) >> 0.00 runtime-PNP0C0C:00 (59) >> 0.00 runtime-PNP0C0D:00 (60) >> 0.00 runtime-PNP0C0E:00 (61) >> 0.00 runtime-PNP0C14:00 (52) >> 0.00 runtime-alarmtimer (63) >> 0.00 runtime-coretemp.0 (75) >> 0.00 runtime-dcdbas (64) >> 0.00 runtime-dell-laptop (69) >> 0.00 runtime-e820_pmem (71) >> 0.00 runtime-i2c-0 (79) >> 0.00 runtime-i2c-1 (80) >> 0.00 runtime-i2c-2 (81) >> 0.00 runtime-i2c-3 (82) >> 0.00 runtime-i8042 (50) >> 0.00 runtime-microcode (74) >> 0.00 runtime-pcspkr (66) >> 0.00 runtime-platform-framebuffer.0 (70) >> 0.00 runtime-regulatory.0 (73) >> 0.00 runtime-rtsx_usb_ms.1.auto (62) >> 0.00 runtime-rtsx_usb_sdmmc.0.auto (65) >> 0.00 runtime-serial8250 (67) >> 3.00 usb-device-0bda-0129 (10) >> 0.00 usb-device-0c45-6712 (9) >> 0.00 usb-device-1d6b-0002 (12) >> 0.00 usb-device-1d6b-0003 (13) >> 0.00 usb-device-8087-07dc (11) >> 0.00 wlp2s0-link-100 (26) >> 0.00 wlp2s0-link-1000 (27) >> 0.00 wlp2s0-link-high (28) >> 0.00 wlp2s0-packets (29) >> 0.00 wlp2s0-powerunsave (25) >> 0.00 wlp2s0-up (24) >> 0.00 xwakes (86) >> >> Score: 1.9 (5079.7) >> Guess: 9.7 >> Actual: 11.3 >> ---------------------------------- >> Leaving PowerTOP/saved_parameters.powertop >> File will be loaded after taking minimum number of measurement(s) with >> battery only >> Starting PowerTOP power estimate calibration >> Calibrating idle >> System is not available >> unknown op '{' >> To show power estimates do 174 measurement(s) connected to battery only >> System is not available >> Calibrating: disk usage >> Calibrating backlight >> .... device /sys/class/backlight/intel_backlight/brightness >> Calibrating idle >> System is not available >> System is not available >> Calibrating: CPU usage on 1 threads >> Calibrating: CPU usage on 4 threads >> Calibrating: CPU wakeup power consumption >> Calibrating: CPU wakeup power consumption >> Calibrating: CPU wakeup power consumption >> Calibrating USB devices >> .... device /sys/bus/usb/devices/1-5/power/control >> .... device /sys/bus/usb/devices/1-6/power/control >> .... device /sys/bus/usb/devices/1-8/power/control >> .... device /sys/bus/usb/devices/usb1/power/control >> .... device /sys/bus/usb/devices/usb2/power/control >> Calibrating radio devices >> .... device /sys/class/rfkill/rfkill0/soft >> .... device /sys/class/rfkill/rfkill1/soft >> .... device /sys/class/rfkill/rfkill0/soft >> .... device /sys/class/rfkill/rfkill1/soft >> Finishing PowerTOP power estimate calibration >> Parameters after calibration: >> >> >> Parameter state *Cannot load from file >> /var/cache/powertop/saved_parameters.powertop *and >> ---------------------------------- >> Value Name >> 1.17 alsa-codec-power (14) >> 1.02 backlight (4) >> 2.08 backlight-boost-100 (8) >> 0.75 backlight-boost-40 (6) >> 0.00 backlight-boost-80 (7) >> 1.97 backlight-power (5) >> 9.66 base power (83) >> 5.81 cpu-consumption (3) >> 24.29 cpu-wakeups (2) >> 0.00 disk-operations (85) >> 0.00 disk-operations-hard (84) >> 0.00 enp3s0-link*Cannot load from file >> /var/cache/powertop/saved_parameters.powertop *and -100 (20) >> 0.00 enp3s0-link-1000 (21) >> 0.00 enp3s0-link-high (22) >> 0.00 enp3s0-packets (23) >> 0.00 enp3s0-powerunsave (19) >> 5.58 enp3s0-up (18) >> 17.40 gpu-operations (17) >> 0.00 radio:hci0 (16) >> 0.00 radio:phy0 (15) >> 0.00 runtime-0000:00:00.0 (30) >> 0.00 runtime-0000:00:02.0 (31) >> 0.00 runtime-0000:00:14.0 (32) >> 0.00 runtime-0000:00:14.2 (33) >> 0.00 runtime-0000:00:15.0 (34) >> 0.00 runtime-0000:00:15.1 (35) >> 0.00 runtime-0000:00:16.0 (36) >> 0.00 runtime-0000:00:17.0 (37) >> 0.00 runtime-0000:00:1c.0 (38) >> 0.00 runtime-0000:00:1c.4 (39) >> 0.00 runtime-0000:00:1c.5 (40) >> 0.00 runtime-0000:00:1f.0 (41) >> 0.00 runtime-0000:00:1f.2 (42) >> 0.00 runtime-0000:00:1f.3 (43) >> 0.00 runtime-0000:00:1f.4 (44) >> 0.00 runtime-0000:01:00.0 (45) >> 0.00 runtime-0000:02:00.0 (46) >> 0.00 runtime-0000:03:00.0 (47) >> 0.00 runtime-ACPI0003:00 (77) >> 0.00 runtime-ACPI000C:00 (78) >> 0.00 runtime-DELLABCE:00 (72) >> 0.00 runtime-INT0800:00 (68) >> 0.00 runtime-INT33A1:00 (49) >> 0.00 runtime-INT344B:00 (48) >> 0.00 runtime-PNP0103:00 (76) >> 0.00 runtime-PNP0C09:00 (51) >> 0.00 runtime-PNP0C0A:00 (53) >> 0.00 runtime-PNP0C0B:00 (54) >> 0.00 runtime-PNP0C0B:01 (55) >> 0.00 runtime-PNP0C0B:02 (56) >> 0.00 runtime-PNP0C0B:03 (57) >> 0.00 runtime-PNP0C0B:04 (58) >> 0.00 runtime-PNP0C0C:00 (59) >> 0.00 runtime-PNP0C0D:00 (60) >> 0.00 runtime-PNP0C0E:00 (61) >> 0.00 runtime-PNP0C14:00 (52) >> 0.00 runtime-alarmtimer (63) >> 0.00 runtime-coretemp.0 (75) >> 0.00 runtime-dcdbas (64) >> 0.00 runtime-dell-laptop (69) >> 0.00 runtime-e820_pmem (71) >> 0.00 runtime-i2c-0 (79) >> 0.00 runtime-i2c-1 (80) >> 0.00 runtime-i2c-2 (81) >> 0.00 runtime-i2c-3 (82) >> 0.00 runtime-i8042 (50) >> 0.00 runtime-microcode (74) >> 0.00 runtime-pcspkr (66) >> 0.00 runtime-platform-framebuffer.0 (70) >> 0.00 runtime-regulatory.0 (73) >> 0.00 runtime-rtsx_usb_ms.1.auto (62) >> 0.00 runtime-rtsx_usb_sdmmc.0.auto (65) >> 0.00 runtime-serial8250 (67) >> 3.00 usb-device-0bda-0129 (10) >> 0.00 usb-device-0c45-6712 (9) >> 0.00 usb-device-1d6b-0002 (12) >> 0.00 usb-device-1d6b-0003 (13) >> 0.00 usb-device-8087-07dc (11) >> 0.00 wlp2s0-link-100 (26) >> 0.00 wlp2s0-link-1000 (27) >> 0.00 wlp2s0-link-high (28) >> 0.00 wlp2s0-packets (29) >> 0.00 wlp2s0-powerunsave (25) >> 0.00 wlp2s0-up (24) >> 0.00 xwakes (86) >> >> Score: 1.9 (5079.7) >> Guess: 9.7 >> Actual: 11.3 >> ---------------------------------- >> Leaving PowerTOP >> >> >> >> After calibration, I do *powertop --auto-tune *and I get: >> >> root@debian:/# powertop --auto-tune >> Loaded 137 prior measurements >> Cannot load from file /var/cache/powertop/saved_parameters.powertop >> File will be loaded after taking minimum number of measurement(s) with >> battery only >> RAPL device for cpu 0 >> RAPL Using PowerCap Sysfs : Domain Mask f >> RAPL device for cpu 0 >> RAPL Using PowerCap Sysfs : Domain Mask f >> RAPL device for cpu 0 >> RAPL Using PowerCap Sysfs : Domain Mask f >> Devfreq not enabled >> Cannot load from file /var/cache/powertop/saved_parameters.powertop >> File will be loaded after taking minimum number of measurement(s) with >> battery only >> To show power estimates do 124 measurement(s) connected to battery only >> unknown op '{' >> Leaving PowerTOP >> >> >> >> My Question is, is it normal to get the lines: >> >> - *Cannot load from file >> /var/cache/powertop/saved_parameters.powertop* >> >> >> - *Devfreq not enabled* >> >> Is it because of these lines that PowerTop is unable to extend the >> battery life? >> Debian Stretch is currently using PowerTop version 2.8 and I heard >> somewhere on a forum that there is a bug in the 2.8 version. Is it true >> that there is a bug ? And is it that bug which is causing the problem? >> >> I thank you in advance for reading this long email 😜 But I really >> need help. >> >> With Kind Regards, >> >> Dwijesh >> >> >> -- Elvis Presley: Love is worth all the gold on Earth
