Test Environment, Platform: Baytrail-M 00:00.0 Host bridge [0600]: Intel Corporation ValleyView SSA-CUnit [8086:0f00] (rev 06) 00:02.0 VGA compatible controller [0300]: Intel Corporation ValleyView Gen7 [8086:0f31] (rev 06) Driver version: OSD: Fedora Release 19.x86_64 Kernel_version: kernel-3.11.0rc2_drmintelfixes_61c254_20130731_+-6401.x86_64.rpm Libdrm: (master)libdrm-2.4.46-2-gfea5408098c3c3057958e85ea9d7146f0b08749e Mesa: (9.2)9b8ad643629fad1724e01c8fbb3289e43d42e1c1 Xserver: (server-1.13-branch)xorg-server-1.13.4 Xf86_video_intel: (master)2.21.13-35-g493763301e995d02cb838d14348da46dd26444af Cairo: (master)3cd6c5966aca1d202744fe44083800bc2a4a831d Libva: (master)d2dbc3f69c69e5933e7b3da429c0fb0cae5b98b0 Libva_intel_driver: (master)8bf807539c1790d6eee531373131672d38c82b31 OpenCL: (master) Kernel: (drm-intel-fixes) 61c2542b3b8e70fc1b82880c3ef7e2f930875b97 BIOS version: BBAYCRB_X64_R_SPI_0040_40_SEC_1040 Description: eDP can light up alone, but hotplug VGA, eDP can't light up anymore.
And just before we had VGA hotplugging doesn't work... This requires a drm.debug=6 dmesg.
Jesse is the Batrail owner.
Created attachment 83653 [details] dmesg for eDP and VGA can't light up simultaneously We try to start X, but eDP still can't light up.
We test 2 scenario, First, 1. Hotplug VGA to system 2. Power ON Result: eDP can't light up Second, 1. Power ON(eDP can light up at this time) 2. Enter to OS 3. Hotplug VGA to system Result: eDP and VGA can light up at the same time
At a high level we are happy, the modeset completed without any errors. So we aren't setting up the display arbitration correctly somewhere...
Does this still occur now that Jani's patch for handling the pipe B panel power sequencer has landed?
(In reply to comment #6) > Does this still occur now that Jani's patch for handling the pipe B panel > power sequencer has landed? We may also need per pipe backlight handling. Which will be a larger PITA than per pipe power sequencing.
We tested it with latest -nightly kernel, but the issue is still exists like what Kobe described.
If you do: intel_reg_write 0x1e1254 0x11551155 as root when this occurs, does the eDP panel light up?
(In reply to comment #9) > If you do: > intel_reg_write 0x1e1254 0x11551155 > > as root when this occurs, does the eDP panel light up? eDP panel really lighted up after I executed "intel_reg_write 0x1e1254 0x11551155".
And how about this patch? http://lists.freedesktop.org/archives/intel-gfx/2013-September/033913.html
I will take short vacation from Sep.26th to Sep.30th. And have Chinese National Day from Oct.1st to Oct.7th. No email access during my short vacation and slow email response during Chinese National Day. If any urgent case, please contact my manager(Yu, Jerry), thanks a lot.
(In reply to comment #11) > And how about this patch? > > http://lists.freedesktop.org/archives/intel-gfx/2013-September/033913.html OK, this patch worked, eDP and VGA can light up simultaneously now.
commit f8abb0d1bb5240164687df528c5e590cbf072e3e Author: Jesse Barnes <jbarnes@virtuousgeek.org> Date: Wed Sep 25 14:04:32 2013 -0700 drm/i915/vlv: hack to init backlight regs if BIOS fails to do so v2
(In reply to comment #14) > commit f8abb0d1bb5240164687df528c5e590cbf072e3e > Author: Jesse Barnes <jbarnes@virtuousgeek.org> > Date: Wed Sep 25 14:04:32 2013 -0700 > > drm/i915/vlv: hack to init backlight regs if BIOS fails to do so v2 This commit worked, verified here.
Closing old verified.
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