| Summary: | [i855] Karmic Koala Alpha 3 live CD give black screen (KMS) | ||||||||||||||||||
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| Product: | xorg | Reporter: | Bryce Harrington <bryce> | ||||||||||||||||
| Component: | Driver/intel | Assignee: | ykzhao <yakui.zhao> | ||||||||||||||||
| Status: | RESOLVED DUPLICATE | QA Contact: | Xorg Project Team <xorg-team> | ||||||||||||||||
| Severity: | major | ||||||||||||||||||
| Priority: | high | CC: | l_giuliani | ||||||||||||||||
| Version: | 7.4 (2008.09) | Keywords: | NEEDINFO | ||||||||||||||||
| Hardware: | x86 (IA32) | ||||||||||||||||||
| OS: | Linux (All) | ||||||||||||||||||
| Whiteboard: | |||||||||||||||||||
| i915 platform: | i915 features: | ||||||||||||||||||
| Attachments: |
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Description
Bryce Harrington
2009-08-18 17:56:55 UTC
Created attachment 28764 [details]
Xorg.0.log
Created attachment 28765 [details]
regdump_good.txt
Created attachment 28766 [details]
dmesg.txt
Created attachment 28767 [details]
XorgLogOld.txt
Created attachment 28768 [details]
XorgLog.txt (Jaunty)
Created attachment 28769 [details]
XorgConf.txt
Comment on attachment 28769 [details]
XorgConf.txt
(this was an old conf not the one used with the livecd boot, so probably irrelevant to the problem.)
Looks like LVDS mode detect issue. So if it's possible to get kernel log with ubuntu default KMS enabled kernel, please append "drm.debug=15" to kernel boot option and attach kernel log. Or with i915.modeset=0, enable "ModeDebug" option in xorg.conf, then attach X log. Do you mean in jaunty UMS driver this machine is fine? maybe try recent 2.8.0 driver in UMS is also a good test. Created attachment 28789 [details]
Karmic Xorg.0.log with "ModeDebug" enable and "i915.modeset=0"
It isn't possible to get a console with normal startup : screen become completly black (even backlight is shut off). And as it's a liveCD, no remote access is possible ==> same behavior with "drm.debug=15" at kernel boot. Attached file Xorg.0.Log.ModeDebug.txt is with i915.modeset=0 and ModeDebug (I have generate a xorg.conf with -configure option and the added "ModeDebug" Option) In Jaunty it work fine with kernel 2.6.30-020630-generic and driver 2.7.1.(from xup repo) But with kernel 2.6.31-5-generic, I have also a black screen until I had i915.modeset=0 and xorg start. I had also try 2.8.0 driver, some week ago, with kernel 2.6.30-020630-generic but as xorg didn't want to start, I had removed it and fall back to 2.7.1 (without keeping log). If you need I can make a second try and keeping log you need ? thanks, your log showed you're using 2.8.0 driver already. The problem is LVDS can't find any mode, as your LVDS has no EDID, and our VBT parsing might be broken. So please attach your vbios dump, do like below: echo 1 > /sys/devices/pci0000\:00/0000\:00\:02.0/rom cat /sys/devices/pci0000\:00/0000\:00\:02.0/rom > /tmp/vbios It'll be good if you can try current xf86-video-intel git tree, revert af45482a52999b52bf41468c458808e30c100e35, and try to test again. Please attach the vbios.dump according to the instruction in comment #11. thanks. Will you please confirm the following commit is included?
commit af45482a52999b52bf41468c458808e30c100e35
Author: Zhao Yakui <yakui.zhao@intel.com>
Date: Fri Jul 24 10:44:20 2009 +0800
Calculate the DVO relative offset in LVDS data entry to get the DVO timing
If not, please apply it and see whether the issue still exists.
Please also attach the vbios.dump by using the instruction described in comment #11.
thanks.
Ping Laurent? Thanks. |
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