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T14 gen2 is now shipping with a realtek wifi card that won't have mainline linux support until the next kernel (5.16) ships. The main problem with the T14 is t
by elabajaba 5y ago
T14 gen2 is now shipping with a realtek wifi card that won't have mainline linux support until the next kernel (5.16) ships.
The main problem with the T14 is that the screens are either bad or horrifically bad, and you don't know what one you get until it arrives. The 400nit low power screens are more like a 30hz panel for the best one (~30ms grey to grey (g2g), and PWM so it causes headaches and eyestrain), or ~14hz for the worst one (74ms g2g! It's feels as slow as an eink screen.)
https://www.notebookcheck.net/Lenovo-s-Panel-Lottery-continues-with-3-different-14-inch-LowPower-displays.426538.0.html https://www.notebookcheck.net/Lenovo-s-Panel-Lottery-continu...
- shmerl 5y agoI got one with a Mediatek card and replaced it with Intel one. It works fine after that. I also replaced the SSD with 1 TB SK Hynix Gold P31. I think my screen is 400 nit but I haven't really noticed major issues with it. I didn't do a lot of testing though.
- elabajaba 5y agoWell response time wise they're worse than the new Macbooks, and those are pretty terrible: https://twitter.com/andreif7/status/1452622025550438403 https://twitter.com/andreif7/status/1452622025550438403 They're not actually using the Innolux display this year sadly, only the AUO and BOE panels (which both have awful ghosting). Once you know what to look for (or feel, since bad ghosting gives me headaches and eyestrain :/), it becomes obvious.
- shmerl 5y agoIs the higher res panel better for them?
- elabajaba 5y agoI'm not sure which exact 4k panel(s) Lenovo is shipping with the T14 this year. From what notebookcheck has tested, the P14 4k panel they had was pretty good (still a bit slow, but usable, and no PWM), while the X1 carbon 4k panel they got was unusable (fast enough, but 200hz PWM so basically guarantees that it'll cause headaches).
- shmerl 5y agoWhat exactly does PWM affect and how do you check if it's used?
- elabajaba 5y agoComment chain was too deep so I couldn't reply. Good article on PWM: https://www.notebookcheck.net/Why-Pulse-Width-Modulation-PWM-is-such-a-headache.270240.0.html https://www.notebookcheck.net/Why-Pulse-Width-Modulation-PWM... I think you need an oscilloscope and some other tools if you want to test what the PWM frequency is. The easiest way to check for PWM is to just look up reviews for laptops using the same panel (you can find the panel number using hwinfo on Windows). To just test for if your display has PWM, lower the brightness, and use the blurbusters test: https://www.testufo.com/blurtrail https://www.testufo.com/blurtrail
- shmerl 5y agoThanks for the pointer. Sounds like PWM frequency is something that should be specified in the screen specs.
- csdvrx 5y agoNo OLED screen. No 5750g so no ECC.
- shmerl 5y ago5750g sounds pretty power hungry. T14 are more balanced for performance / battery life. Lenovo should have some other line of laptops for that.