[coreboot] Re: Extended IvyBridge CPU configuration
Hello, I am interested in this patch and would like to help test. I have an X230 and a T430 available for testing. I also believe leaving it as a CMOS option would be best. Kind regards, Michał ___ coreboot mailing list -- coreboot@coreboot.org To unsubscribe send an email to coreboot-le...@coreboot.org
Re: [coreboot] T520 vs. T530
>Not quite so. On T520 the flash chip is accessible right after you >remove the keyboard and the palmrest and there's no need to remove the >motherboard from chassis. Sorry, my bad. I mixed up my facts there. >Although it's possible to use just the 8M chip by using modified layout, it >might >be confusing for a beginner. I managed to flash my T430's both flash chips by splitting the 12M coreboot image into two parts (4M + 8M) and flashing the chips separately, is this not a good option? This way I don't have to pass a layout file to flashrom, it just writes to both chips. It also allows me to have a larger CBFS. -- coreboot mailing list: coreboot@coreboot.org https://mail.coreboot.org/mailman/listinfo/coreboot
Re: [coreboot] T520 vs. T530
>1. I need CPU power. I read that it is possible to put a i7-3940XM in a T530. >Because of coreboot it should also possible to put it in a T520? Yes, with Coreboot you can put an Ivy Bridge CPU into a xx20 series ThinkPads. >2. I would like to use an eGPU. Any differences between these two models? Not really, especially with coreboot. I'm glad to report that my RX 580 eGPU works well with my T430 running Coreboot - just make sure you enable ONBOARD_VGA_IS_PRIMARY in your config, otherwise your integrated graphics will be disabled and you'll lose eGPU hotplug. >3. With which model it is easier to install coreboot on it? No practical difference, the building and flashing procedure is the same. >4. What are the general pros and cons of a T520/T530, especially with coreboot? T530 will not accept non-Lenovo batteries unlesh you flash a patched EC firmware, and that can only be done while you're still running stock UEFI. T530 has USB 3.0, T520 has a keyboard that some consider superior. Otherwise the machines are extremely similar. -- coreboot mailing list: coreboot@coreboot.org https://mail.coreboot.org/mailman/listinfo/coreboot
Re: [coreboot] coreboot ThinkPad users
BDC seems to be turning off properly on my T430. Powertop measurements indicate ~0.08W power usage improvement with BT toggled off in GNOME/NetworkManager. With regards, Michał -- coreboot mailing list: coreboot@coreboot.org https://mail.coreboot.org/mailman/listinfo/coreboot
Re: [coreboot] Problems with NVidia on Lenovo ThinkPad T430
> Hello Tobias, > > You can switch between GPUs by changing the value of the > hybrid_graphics_mode CMOS setting using nvramcui or nvramtool. > Currently, for the T430 this field can be set to either Integrated only > or Dedicated only. Make sure you are using CMOS for configuration > values. Unfortunately, I was unable to switch the power for the dGPU > off at all, which resulted in rather high power consumption even if > only the integrated GPU is enabled. > > Regards, > Micha? Kope? > Hello, thanks for the feedback. What version of Coreboot did you use? Is the stable 4.7 enough or should I use a snapshot from the git-repository? Also the question how to include the VGA-bios for the NVidia-card. I did a compilation with the VGA-bios for Intel and included the rom afterwards with cbfstool. Is this the correct way to do as "optional rom"? Thanks! Regards, Tobias. Hello, I'm currently using the latest Git snapshot on my machine. I also compiled with the Intel option rom and added the nvidia option rom using cbfstool after, like you did. I haven't tried 4.7, so I couldn't tell you how it works there. Regards, Michał Kopeć -- coreboot mailing list: coreboot@coreboot.org https://mail.coreboot.org/mailman/listinfo/coreboot
Re: [coreboot] Problems with NVidia on Lenovo ThinkPad T430
Hello everybody! I have problems with getting coreboot running on a Lenovo ThinkPad T430. Better to say: Running with the integrated second graphics adapter NVS 5400M. The Intel HD 4000 is working fine and from the wiki I know that NVidia Optimus is not supported for now. So what to do exactly getting the graphics adapter running? Even only NVidia only would be great. Both adapters are not needed on GNU-Linux for my usecase. I have two VGA-ROMs extracted and compiled this using the concurrent stable-version 4.7. Is this wrong? Some help and hints would be appreciated. Best regards, Tobias. Hello Tobias, You can switch between GPUs by changing the value of the hybrid_graphics_mode CMOS setting using nvramcui or nvramtool. Currently, for the T430 this field can be set to either Integrated only or Dedicated only. Make sure you are using CMOS for configuration values. Unfortunately, I was unable to switch the power for the dGPU off at all, which resulted in rather high power consumption even if only the integrated GPU is enabled. Regards, Michał Kopeć -- coreboot mailing list: coreboot@coreboot.org https://mail.coreboot.org/mailman/listinfo/coreboot
