Good morning,
Could you please CC me on any replies as I am not subscribed to this
mailing list.
Recent i915 development appears to have stopped my eDP panel from being
driven correctly. The last working release was 4.6.7; any 4.7 kernel
will not drive the screen and 4.8-RC3 does not drive the screen either.
I have both 4.6.7 and 4.8.0-rc3 kernel images available and am happy to
run any debug/troubleshooting that you require.
The video card in question is:
00:02.0 VGA compatible controller [0300]: Intel Corporation 4th Gen Core
Processor Integrated Graphics Controller [8086:0416] (rev 06) (prog-if
00 [VGA controller])
Subsystem: Fujitsu Limited. 4th Gen Core Processor Integrated Graphics
Controller [10cf:17aa]
Flags: bus master, fast devsel, latency 0, IRQ 24
Memory at f0000000 (64-bit, non-prefetchable) [size=4M]
Memory at e0000000 (64-bit, prefetchable) [size=256M]
I/O ports at 3000 [size=64]
[virtual] Expansion ROM at 000c0000 [disabled] [size=128K]
Capabilities: [90] MSI: Enable+ Count=1/1 Maskable- 64bit-
Capabilities: [d0] Power Management version 2
Capabilities: [a4] PCI Advanced Features
Kernel driver in use: i915
It is in a Fujitsu E744 with a 1366x768 panel, which does not appear to
have EDID information if I am reading this right:
amalthea tmp # xrandr --verbose
Screen 0: minimum 8 x 8, current 3440 x 2208, maximum 32767 x 32767
eDP1 connected 1366x768+0+1440 (0x4f) normal (normal left inverted right
x axis y axis) 293mm x 165mm
Identifier: 0x43
Timestamp: 15668
Subpixel: unknown
Gamma: 1.0:1.0:1.0
Brightness: 1.0
Clones:
CRTC: 0
CRTCs: 0 1 2
Transform: 1.000000 0.000000 0.000000
0.000000 1.000000 0.000000
0.000000 0.000000 1.000000
filter:
BACKLIGHT: 5022
range: (0, 5022)
Backlight: 5022
range: (0, 5022)
scaling mode: Full aspect
supported: None, Full, Center, Full aspect
Broadcast RGB: Automatic
supported: Automatic, Full, Limited 16:235
audio: auto
supported: force-dvi, off, auto, on
1366x768 (0x4f) 70.000MHz -HSync -VSync *current +preferred
h: width 1366 start 1402 end 1438 total 1476 skew 0 clock
47.43KHz
v: height 768 start 772 end 780 total 790 clock
60.03Hz
1280x720 (0x50) 74.480MHz -HSync +VSync
h: width 1280 start 1336 end 1472 total 1664 skew 0 clock
44.76KHz
v: height 720 start 721 end 724 total 746 clock
60.00Hz
1024x768 (0x51) 65.000MHz -HSync -VSync
h: width 1024 start 1048 end 1184 total 1344 skew 0 clock
48.36KHz
v: height 768 start 771 end 777 total 806 clock
60.00Hz
1024x576 (0x52) 46.995MHz -HSync +VSync
h: width 1024 start 1064 end 1168 total 1312 skew 0 clock
35.82KHz
v: height 576 start 577 end 580 total 597 clock
60.00Hz
960x540 (0x53) 40.784MHz -HSync +VSync
h: width 960 start 992 end 1088 total 1216 skew 0 clock
33.54KHz
v: height 540 start 541 end 544 total 559 clock
60.00Hz
800x600 (0x54) 40.000MHz +HSync +VSync
h: width 800 start 840 end 968 total 1056 skew 0 clock
37.88KHz
v: height 600 start 601 end 605 total 628 clock
60.32Hz
800x600 (0x55) 36.000MHz +HSync +VSync
h: width 800 start 824 end 896 total 1024 skew 0 clock
35.16KHz
v: height 600 start 601 end 603 total 625 clock
56.25Hz
864x486 (0x56) 32.901MHz -HSync +VSync
h: width 864 start 888 end 976 total 1088 skew 0 clock
30.24KHz
v: height 486 start 487 end 490 total 504 clock
60.00Hz
640x480 (0x57) 25.175MHz -HSync -VSync
h: width 640 start 656 end 752 total 800 skew 0 clock
31.47KHz
v: height 480 start 490 end 492 total 525 clock
59.94Hz
720x405 (0x58) 22.176MHz -HSync +VSync
h: width 720 start 728 end 800 total 880 skew 0 clock
25.20KHz
v: height 405 start 406 end 409 total 420 clock
60.00Hz
680x384 (0x59) 19.677MHz -HSync +VSync
h: width 680 start 688 end 752 total 824 skew 0 clock
23.88KHz
v: height 384 start 385 end 388 total 398 clock
60.00Hz
640x360 (0x5a) 17.187MHz -HSync +VSync
h: width 640 start 640 end 704 total 768 skew 0 clock
22.38KHz
v: height 360 start 361 end 364 total 373 clock
60.00Hz
The panel backlight is on, but the screen is black. The kernel is
running normally and behaves as if the output is being driven.
Thank you in advance for any assistance you can provide.
Regards,
Tony V.
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