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Monitor (LVDS) blacks out when adding external monitor #44
Comments
Comment by Earnestly Does the log contain any useful information perhaps? |
Comment by Manouchehri Sure. Didn't think it was necessary (thought the issue would be easy to spot), but I'll grab a log. |
Comment by Manouchehri Towards the end is when I inserted the HDMI cable. Doesn't seem to mention anything about powering off LVDS (but it definitely is).
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Comment by Manouchehri It's only the hot-plugging that has an issue. If I boot with HDMI plugged in during startup, there's no issues with LVDS.
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Comment by Earnestly That could very likely be a drm driver (kernel) issue, although I have no idea really. |
Comment by Manouchehri The issue isn't present with X. If it was a kernel issue, wouldn't I see it |
Comment by Earnestly Nah, wayland stuff stresses different parts of the code in the driver. In the early days of wayland and orbment things would break quite often, in some cases orbments fault (page flipping) and in the others the driver. When the next kernel rolled out some of these problems just went away. |
Comment by Cloudef
Something seems to break during the hot plugging. |
Comment by Manouchehri Which device is it saying is full?
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Comment by Cloudef The error message may be garbage. I don't think the drm function that fails sets errno, so it just says "No space left on device". (Should be fixed). But nevertheless the card page flipping starts failing after you plug the monitor. This might be issue with either drm or wlc causing race condition during hotplug. |
Comment by Manouchehri My GPU does crash a fair amount, that could be it. I don't see anything in |
Comment by Fale This same problem is also discussed at swaywm/sway#960 |
Comment by Fale I've a log with also WLC debug enabled, if it can help: http://paste.fedoraproject.org/489432/14800674/ The WLC debug option:
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Comment by maximiliankaul I’m not sure if this is relevant but I made the following observation:
I’m tested on the following versions:
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same issue here... |
I observe the exact behavior described by @maximiliankaul. Any updates on this issue? |
Anyone at least have a workaround for this besides rebooting the system? |
Issue by Manouchehri
Sunday Nov 22, 2015 at 15:38 GMT
Originally opened as Cloudef/wlc#87
Upon plugging in an HDMI monitor to my laptop, the LVDS/internal screen powers off and I cannot see anything on it. Unplugging the HDMI cable does not turn the LVDS screen back on either.
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