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| author | Francis Rowe <info@gluglug.org.uk> | 2014-12-28 15:16:32 (EST) |
|---|---|---|
| committer | Francis Rowe <info@gluglug.org.uk> | 2014-12-28 15:16:32 (EST) |
| commit | 19b1d9fea7d3f9a3d698edbd9413551b5a7c2b70 (patch) | |
| tree | d340590763298b8cbbf2b8db339a50da7995a741 | |
| parent | 417e9e7f3db8f2f67577e7caf57812ffb1b2ddb4 (diff) | |
| download | libreboot-19b1d9fea7d3f9a3d698edbd9413551b5a7c2b70.zip libreboot-19b1d9fea7d3f9a3d698edbd9413551b5a7c2b70.tar.gz libreboot-19b1d9fea7d3f9a3d698edbd9413551b5a7c2b70.tar.bz2 | |
docs (macbook21): update notes about heat / external flashing
| -rw-r--r-- | docs/hcl/index.html | 27 |
1 files changed, 5 insertions, 22 deletions
diff --git a/docs/hcl/index.html b/docs/hcl/index.html index 429f125..30f9564 100644 --- a/docs/hcl/index.html +++ b/docs/hcl/index.html @@ -393,8 +393,7 @@ EndSection <p> No method is yet known for flashing in GNU/Linux while the Apple firmware is running. You will need to disassemble the machine and flash externally. - Reading from flash seems to work. Bus Pirate recommended for external flashing (there are others) and needed tools: clip (eg Pomona 5250), mini usb cable, - bus pirate cable (for connecting Pomona to the bus pirate). + Reading from flash seems to work. For external flashing, refer to <a href="../install/bbb_setup.html">../install/bbb_setup.html</a>. </p> <p><a href="#pagetop">Back to top of page.</a></p> @@ -483,8 +482,7 @@ EndSection </p> <p> - Bus Pirate recommended for external flashing (there are others) and needed tools: clip (eg Pomona 5250), mini usb cable, - bus pirate cable (for connecting Pomona to the bus pirate). + For external flashing, refer to <a href="../install/bbb_setup.html">../install/bbb_setup.html</a>. </p> <p> @@ -502,24 +500,9 @@ EndSection </p> <p> - The macbook21 gets extremely hot under GNU/Linux and libreboot; Macfanctld (mac fan control daemon) I'm told is a programme (GPLv3 license) that can help with this. - </p> - - <p> - Debugging the heating issues (initial work):<br/> - Distro: Trisquel 7. kernel(linux-libre): 3.13.0-32<br/> - <b>CPU temperatures:</b><br/> - 52C(idle)/81C(stress) on factory.bin<br/> - 70C(idle)/80C(stress) on coreboot(with microcode updates). libreboot results (without microcode updates) were the same.<br/> - (libreboot and coreboot rom's were both built from the same code, just with or without microcode included in the rom)<br/> - battery life was higher on original firmware, lower on coreboot/libreboot.<br/> - microcode patches included [y/n] makes no difference.<br/> - libreboot: 1hr18min left on idle (99% battery), 42mins left on stress (82% battery)<br/> - factory.bin: 2 hours left on idle (99% battery), 48mins left on stress (82% battery) - </p> - <p> - Todo: see what the non-free firmware has in it's ACPI tables using acpidump and iasl -d. Try to implement cstate support in coreboot - (this will allow for lower temperatures). + The machine does get a bit hotter compared to when running the original firmware. It is certainly hotter + than an X60/T60. The heat issues have been partially fixed by the following patch (now merged in libreboot): + <a href="http://review.coreboot.org/#/c/7923/">http://review.coreboot.org/#/c/7923/</a>. </p> <p> |