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[Bug 554569] Re: [lucid] Blank screen with KMS on Thinkpad X201 with Arrandale (i915)

To: ubuntu-x-swat@xxxxxxxxxxxxxxxxxxx
From: Thomas Uehlinger <thomas.uehlinger@xxxxxxxxx>
Date: Fri, 21 May 2010 21:02:36 -0000
Reply-to: Bug 554569 <554569@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx

I can confirm that the following patch solves the bug for me (X201, latest bios version 1.14, patch applied to the offical 10.04 kernel 2.6.32-22)
     
+++ intel_display.c            
        bool found;
        /* approximately equals target * 0.00488 */
        int err_most = (target >> 8) + (target >> 10);
+       err_most += 50;
        found = false;

        if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS)) {

-- 
[lucid] Blank screen with KMS on Thinkpad X201 with Arrandale (i915)
https://bugs.launchpad.net/bugs/554569
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