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> I'd say ~2 hours at full brightness Most laptops with high brightness monitors would leave you with about 2-3 hours of battery life... many laptops can hit 3

> I'd say ~2 hours at full brightness Most laptops with high brightness monitors would leave you with about 2-3 hours of battery life... many laptops can hit 300-400 nits, some even more. sRGB and BT709 declare the brightness of SDR white as 100 nits, and 100-120 is considered acceptable. The rest of what you say sounds like your Ubuntu is misconfigured, which is common with Ubuntu installs. The fix is usually either changing a few files in /etc, or installing an entirely different distro that isn't user hostile.

lhl 3y ago
I think you're way overestimating the power usage of modern displays. The Framework display (BOE095F) backlight based on my personal testing uses ~2.1W at 100% (440 nits) (this is as expected, you can look at datasheets on similar displays like https://datasheetspdf.com/pdf-file/1294460/BOE/NT156FHM-N41/1 https://datasheetspdf.com/pdf-file/1294460/BOE/NT156FHM-N41/... and the the Pbl on the specsheet). The old Framework 13s have a 55Wh battery, so 2-3h would require 18.3-27.5W of average power consumption. For context, PL1 (max sustained power limit) of the 12th-gen CPUs are set to 30W in the Framework and when I tested last year, powerstat (calculated w/ ACPI battery info) reported that the laptop my 1260P Framework idles at is about 3.34W w/ backlight off, 4.01W @ 200 nits, and 5.46W @ 100% BL.
- DiabloD3 3y ago
  Huh. I didn't realize displays had gotten this efficient. I remember when LED backlights were more efficient, but not efficient (huge leap over CCFL, obviously). So yeah, sounds like the parent comment's Ubuntu is just grossly misconfigured, either out of the box, or merely a few things relevant to Intel Cove-era have to be manually flipped on/off. I'd love to see if he can repeat it with any other distro, such as with SuSE, or Debian + task-laptop and KDE.

lhl 3y ago

I think you're way overestimating the power usage of modern displays. The Framework display (BOE095F) backlight based on my personal testing uses ~2.1W at 100% (440 nits) (this is as expected, you can look at datasheets on similar displays like https://datasheetspdf.com/pdf-file/1294460/BOE/NT156FHM-N41/1 https://datasheetspdf.com/pdf-file/1294460/BOE/NT156FHM-N41/... and the the Pbl on the specsheet). The old Framework 13s have a 55Wh battery, so 2-3h would require 18.3-27.5W of average power consumption. For context, PL1 (max sustained power limit) of the 12th-gen CPUs are set to 30W in the Framework and when I tested last year, powerstat (calculated w/ ACPI battery info) reported that the laptop my 1260P Framework idles at is about 3.34W w/ backlight off, 4.01W @ 200 nits, and 5.46W @ 100% BL.

DiabloD3 3y ago
Huh. I didn't realize displays had gotten this efficient. I remember when LED backlights were more efficient, but not efficient (huge leap over CCFL, obviously). So yeah, sounds like the parent comment's Ubuntu is just grossly misconfigured, either out of the box, or merely a few things relevant to Intel Cove-era have to be manually flipped on/off. I'd love to see if he can repeat it with any other distro, such as with SuSE, or Debian + task-laptop and KDE.