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authorFrancis Rowe <info@gluglug.org.uk>2015-05-10 06:58:37 (EDT)
committer Francis Rowe <info@gluglug.org.uk>2015-05-10 06:58:37 (EDT)
commit015ab58cc08bf3427273acdb74f8f0c643aff912 (patch)
treef5788da04f9db6c9509f11a4d63740846d6150f2 /docs/tasks.html
parentc421b9a303532577e2137000c1b18e71afd31a1b (diff)
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docs/tasks.html: Remove note about linux 3.19 on i945
The bug is fixed and the patch is merged upstream (kernel.org)
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See <a href="hcl/t500.html">hcl/t500.html</a>.
</li>
<li>
- <b><u><i>HIGH PRIORITY!</i></u></b> <b>i945: Linux 3.19 doesn't boot.
- <b>UPDATE: Patch to fix it is on linux bug tracker (see below), we are waiting
- for it to merge in linux upstream/mainline. For now, we are getting
- this patch into the GNU/Linux distros typically used with libreboot.</b>
- (also affects T60/macbook21).
- <a href="https://bugzilla.kernel.org/show_bug.cgi?id=93171">Preliminary bug report (kernel, linux)</a>
- pstuge said <a href="http://biosbits.org/">http://biosbits.org/</a>
- patricg says https://wiki.ubuntu.com/HardwareEnablementTeam/Documentation/FirmwareTestSuiteLive</b>
- <ul>
- <li>It's commit aaecdf61 (drm/i915: Stop gathering error states for CS error interrupts)
- in linux that introduced the regression</li>
- <li>
- This patch linked on the bug report page above:
- <a href="https://bugzilla.kernel.org/attachment.cgi?id=172941">https://bugzilla.kernel.org/attachment.cgi?id=172941</a>
- - fixes the problem, and makes the i945 laptops boot up again.
- <ul>
- <li>
- Parabola has temporarily merged it in a kernel update
- - when it's merged upstream, let Emulatorman know (#parabola on IRC freenode)
- </li>
- <li>
- So has Guix
- - when it's merged upstream, let mark_weaver know (#guix on IRC freenode)
- </li>
- <li>
- So has freesh (for Trisquel)
- - when it's merged upstream, let jxself and lxo know (#linux-libre on IRC freeode)
- </li>
- </ul>
- </li>
- <li>
- Since 3.19, there are still some warning messages now, after applying the patch.
- See Mono's comments on the bug report page
- - <a href="https://bugzilla.kernel.org/show_bug.cgi?id=93171#c27">https://bugzilla.kernel.org/show_bug.cgi?id=93171#c27</a>
- <ul>
- <li>
- <a href="https://bugzilla.kernel.org/show_bug.cgi?id=93171#c29">https://bugzilla.kernel.org/show_bug.cgi?id=93171#c29</a>
- <a href="https://bugzilla.kernel.org/show_bug.cgi?id=93171#c30">https://bugzilla.kernel.org/show_bug.cgi?id=93171#c30</a>
- - it seems that these warnings have been fixed, and will soon land in upstream.
- </li>
- </ul>
- </li>
- <li>
- TODO: this fix in linux is a workaround, the real bug is in coreboot. (without the patch,
- 3.19/higher doesn't boot on coreboot/libreboot i945 with native graphics, but does boot
- on lenovobios with 3.19/higher - it probably also boots with coreboot+vgarom, since
- the bug is in the video init code.
- </li>
- </ul>
- </li>
- <li>
i945: fix VRAM size (currently 8MB. should be 64MB).
See <a href="future/index.html#i945_vram_size">future/index.html#i945_vram_size</a>.
</li>