15 - What has been your experience of laptop battery life - is suspend acually a thing?

Hi there,

I have a problem with the battery life.
Laptop now gets very hot with use, hotter than it ever used to with 42.x.
I can leave the laptop fully charged having being closed for hours (and cool to the touch), and find it entirely discharged after five hours.

Two characteristics:
Power seems to drain faster in use - web-browsing can see the battery drop 50% in an hour.
Laptop does not seem to suspend properly - at least that is my presumption from dead batteries after several hours from full.

This laptop is a 2012 era Samsung Series 9 ultrabook with an Ivybridge 17W dual-core.
Despite its age, I could still expect four hours of light usage out of it under 42.x (fairly intensive web-browsing, mainly text, virtually no streaming of any kind).

Wifi signal strength isn’t perfect from where it is used, but it is definately not marginal - or even low.

Any thoughts?

These are hardware-specific issues, so some further investigation will be needed to help tune power management. These references could be useful here…

Your graphics hardware details are likely also relevant…

/usr/sbin/hwinfo --gfxcard

i had a look in the power management settings and all looks as it should.

—@—:~> /usr/sbin/hwinfo --gfxcard
11: PCI 02.0: 0300 VGA compatible controller (VGA)
[Created at pci.378]
Unique ID: _Znp.vD6EreSNzdB
SysFS ID: /devices/pci0000:00/0000:00:02.0
SysFS BusID: 0000:00:02.0
Hardware Class: graphics card
Model: “Intel 3rd Gen Core processor Graphics Controller”
Vendor: pci 0x8086 “Intel Corporation”
Device: pci 0x0166 “3rd Gen Core processor Graphics Controller”
SubVendor: pci 0x144d “Samsung Electronics Co Ltd”
SubDevice: pci 0xc0d3
Revision: 0x09
Driver: “i915”
Driver Modules: “i915”
Memory Range: 0xf0000000-0xf03fffff (rw,non-prefetchable)
Memory Range: 0xe0000000-0xefffffff (ro,non-prefetchable)
I/O Ports: 0x3000-0x303f (rw)
Memory Range: 0x000c0000-0x000dffff (rw,non-prefetchable,disabled)
IRQ: 25 (52562 events)
I/O Port: 0x00 (rw)
Module Alias: “pci:v00008086d00000166sv0000144Dsd0000C0D3bc03sc00i00”
Driver Info #0:
Driver Status: i915 is active
Driver Activation Cmd: “modprobe i915”
Config Status: cfg=new, avail=yes, need=no, active=unknown

Primary display adapter: #11