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| author | Francis Rowe <info@gluglug.org.uk> | 2015-12-06 11:34:07 (EST) |
|---|---|---|
| committer | Francis Rowe <info@gluglug.org.uk> | 2015-12-06 11:34:07 (EST) |
| commit | 3a61a752b35aed42fb78231c961bb4d16b7846fb (patch) | |
| tree | 51f3602ddd67a66c4f5d4a042c4908945729d47b /site/faq | |
| parent | 8fa85ccd01c1c9c54db95a1b490efcb3b34d5e3d (diff) | |
| download | libreboot.org-3a61a752b35aed42fb78231c961bb4d16b7846fb.zip libreboot.org-3a61a752b35aed42fb78231c961bb4d16b7846fb.tar.gz libreboot.org-3a61a752b35aed42fb78231c961bb4d16b7846fb.tar.bz2 | |
FAQ: ATI GPUs on GM45 hardware
Diffstat (limited to 'site/faq')
| -rw-r--r-- | site/faq/index.php | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/site/faq/index.php b/site/faq/index.php index a0a41d4..33b9884 100644 --- a/site/faq/index.php +++ b/site/faq/index.php @@ -53,6 +53,7 @@ </ul> </li> <li><a href="#librem">Will the Purism Librem laptops be supported?</a></li> + <li><a href="#t400t500ati">Will libreboot work on a ThinkPad T400 or T500 with an ATI GPU?</a></li> <li><a href="#thinkpads">Will the latest Thinkpad models be supported?</a></li> <li><a href="#desktops">Will desktop/server hardware be supported?</a></li> <li><a href="#randomhardware">Hi, I have <insert random system here>, is it supported?</a></li> @@ -348,6 +349,25 @@ <a href="#pagetop">Back to top of page</a> </p> + <h2 id="t400t500ati">Will libreboot work on a ThinkPad T400 or T500 with an ATI GPU? <span class="r"><a href="#t400t500ati">#t400t500ati</a></span></h2> + <p> + Short answer: yes. + </p> + <p> + These laptops use what is called <i>switchable graphics</i>, where it will have an Intel or ATI GPU. + Coreboot will allow you to set (using nvramtool) a parameter, specifying whether you would like to use + Intel or ATI. The ATI GPU lacks free native graphics initialization in coreboot, unlike the Intel GPU. + </p> + <p> + Libreboot modifies coreboot, in such a way where this nvramtool setting is ignored. Libreboot will just + assume that you want to use the Intel GPU. Therefore, the ATI GPU is completely disabled on these laptops. + Intel is used instead, with the free native graphics initialization (VBIOS replacement) that exists in + coreboot. + </p> + <p> + <a href="#pagetop">Back to top of page</a> + </p> + <h2 id="thinkpads">Will the latest ThinkPad models be supported? <span class="r"><a href="#thinkpads">#thinkpads</a></span></h2> <p> The latest ThinkPad generation supported in libreboot are the ones |