Slight offtopic: Can I replace the w530 motherboard with a t530 one without nvidia ? Would it be a simple swap ? w530 ticks most boxes (quad ivy upto 3940xm, decent wide gamut fhd panel, 32GB RAM) except for the nvidia card. It seems like it would become a really nice laptop after the swap.
On Sat, Apr 6, 2019 at 4:14 AM Prasun Gera <[email protected]> wrote: > Same laptop (w530): > > Driver: nvidia binary > With dGPU active: > f8 > With dGPU inactive: > 70 > > Method for switching: bbswitch > Newer versions of ubuntu try to do the prime-select switching in a > different way (i.e. not bbswitch) when the nvidia driver is in use. This > new method doesn't work on these laptops. The old bbswitch method does work > reliably. Also, nouveau is able to reliably turn the dgpu on and off. > Ubuntu bug report: > https://bugs.launchpad.net/ubuntu/+source/nvidia-prime/+bug/1778011 > > > On Fri, Apr 5, 2019 at 3:13 PM Zaolin <[email protected]> wrote: > >> Sup, >> >> -> f8 on my Thinkpad W530 >> >> On 05.04.19 20:21, Patrick Rudolph wrote: >> > Hi folks, >> > In order to add Nvidia Optimus support on Lenovo laptops, I'm trying >> > to fix the last issues on [1], but I need your help to do some test on >> > Lenovo's firmware. >> > On Lenovo Sandy Bridge / Ivy Bridge series the PMH7 register 0x50 >> > controls dGPU power. >> > Comments on Gerrit show that different bits on different generations >> > are used. >> > >> > Please use util/pmh7tool on vendor firmware with Optimus enabled and >> > graphics driver loaded: >> > >> > $ ./pmh7tool -r 0x50 >> > >> > To wake the GPU from sleep, you can simply run lspci, or a graphical >> > 3D application. >> > It will go back to sleep after a few seconds of idle. >> > >> > Please report which bits toggle and the device you run tests on. >> > It will help to add proper Nvidia Optimus support to all Lenovo laptops. >> > >> > >> > 1: https://review.coreboot.org/#/c/coreboot/+/28380/ >> > >> > Regards, >> > Patrick >> > _______________________________________________ >> > coreboot mailing list -- [email protected] >> > To unsubscribe send an email to [email protected] >> >> _______________________________________________ >> coreboot mailing list -- [email protected] >> To unsubscribe send an email to [email protected] >> >
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