[Intel-gfx] [Intel HD 4400] strongly irritating artefacts on 2560x1440 laptop display
Jani Nikula
jani.nikula at linux.intel.com
Wed Jan 28 01:45:10 PST 2015
On Tue, 27 Jan 2015, Martin Wilck <mwilck at arcor.de> wrote:
> Dear list members,
>
> I suffer from highly disturbing artefacts with the Intel HD 4400 chip
> set on thw 2560x1440 display (Sharp LQ133T1JW19) of my Fujitsu Lifebook
> S904. The effects are hard to describe, therefore I have uploaded a
> video to
> https://www.dropbox.com/sh/9wh0nzvp0w1phxz/AAAsvAqHN8ApXzor58FmGbwLa?dl=0.
> I can distinguish 2 effects that are possibly related to each other:
Just a quick guess, what does this say:
# cat /sys/module/i915/parameters/enable_{fbc,ips,psr}
Please try these module parameters for the non-zero ones:
i915.enable_fbc=0
i915.enable_ips=0
i915.enable_psr=0
BR,
Jani.
>
> 1. Maximized windows under GNOME3 (fully maximized or half-maximized on
> the right edge of the screen) fill the screen vertically with a single
> color (usually grey). Half-maximzed windows on the left edge are not
> affected. The effect is only seen if the Laptop screen is the main
> monitor in GNOME (showing the panel on top). Some applications, which
> start in maximized mode and can't be resized, are unusable on this screen.
>
> 2. Artefacts appear when windows are placed on the right and bottom
> areas of the screen. The artefacts look as if pixels extend vertically
> from their horizontal position to the bottom edge of the screen
> (resulting in vertical lines). The strength of the effect depends on the
> content of the windows that are visible. The effect "extends" from the
> window causing it to other windows and the background. The effect is not
> seen in screenshots (screenshot looks fine although the screen was
> unreadable at the time I took it).
>
> 1.) is observed only under GNOME, but I see 2.) on KDE and LXDE, too. I
> also tried various distributions. Most of my experiments have been done
> on OpenSUSE 13.2, kernel-vanilla-3.19.rc5, xorg 7.6_1.16.1-5.1, intel
> 2.99.916, libdrm_intel1-2.4.58-1.1, Mesa 10.3.0-91.3.2. But I see the
> artefacts also on Fedora 21 and Ubuntu 14.04.
>
> As a matter of fact, I tried the modesetting driver and even fbdev and
> observed similar effects, too. Thus i915 may actually not be the culprit
> here, but could I figure no other place to ask for help than this
> mailing list.
>
> I have also experimented with resolutions and refresh rates. Only at
> 1024x768 and lower I was unable to reproduce the problem.
>
> Any help would be highly appreciated. I am highly willing to do any
> testing and/or debugging that may be necessary to find the problem.
>
> Best regards
> Martin
>
>
> martin at artemis:~> xrandr --verbose
> Screen 0: minimum 8 x 8, current 2560 x 1440, maximum 32767 x 32767
> eDP1 connected primary 2560x1440+0+0 (0x49) normal (normal left inverted
> right x axis y axis) 294mm x 165mm
> Identifier: 0x43
> Timestamp: 19447
> 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:
> _MUTTER_PRESENTATION_OUTPUT: 0
> EDID:
> 00ffffffffffff004d10121400000000
> 24170104a51d1178068800a4564d9a26
> 0d505400000001010101010101010101
> 010101010101735f00a0a0a03a503020
> e50026a510000018454c00a0a0a03a50
> 3020e50026a510000018aa3f00a0a0a0
> 3a503020e50026a510000018000000fc
> 004c5131333354314a5731390a2000b6
> BACKLIGHT: 892
> range: (0, 892)
> Backlight: 892
> range: (0, 892)
> 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
> 2560x1440 (0x49) 244.350MHz -HSync -VSync *current +preferred
> h: width 2560 start 2608 end 2640 total 2720 skew 0 clock
> 89.83KHz
> v: height 1440 start 1454 end 1459 total 1498 clock
> 59.97Hz
> 2560x1440 (0xae) 195.250MHz -HSync -VSync
> h: width 2560 start 2608 end 2640 total 2720 skew 0 clock
> 71.78KHz
> v: height 1440 start 1454 end 1459 total 1498 clock
> 47.92Hz
> 2560x1440 (0xaf) 162.980MHz -HSync -VSync
> h: width 2560 start 2608 end 2640 total 2720 skew 0 clock
> 59.92KHz
> v: height 1440 start 1454 end 1459 total 1498 clock
> 40.00Hz
> 1920x1440 (0xb0) 234.000MHz -HSync +VSync
> h: width 1920 start 2048 end 2256 total 2600 skew 0 clock
> 90.00KHz
> v: height 1440 start 1441 end 1444 total 1500 clock
> 60.00Hz
> 1856x1392 (0xb1) 218.300MHz -HSync +VSync
> h: width 1856 start 1952 end 2176 total 2528 skew 0 clock
> 86.35KHz
> v: height 1392 start 1393 end 1396 total 1439 clock
> 60.01Hz
> 1792x1344 (0xb2) 204.800MHz -HSync +VSync
> h: width 1792 start 1920 end 2120 total 2448 skew 0 clock
> 83.66KHz
> v: height 1344 start 1345 end 1348 total 1394 clock
> 60.01Hz
> 1600x1200 (0xb3) 162.000MHz +HSync +VSync
> h: width 1600 start 1664 end 1856 total 2160 skew 0 clock
> 75.00KHz
> v: height 1200 start 1201 end 1204 total 1250 clock
> 60.00Hz
> 1400x1050 (0xb4) 122.000MHz +HSync +VSync
> h: width 1400 start 1488 end 1640 total 1880 skew 0 clock
> 64.89KHz
> v: height 1050 start 1052 end 1064 total 1082 clock
> 59.98Hz
> 1280x1024 (0xb5) 108.000MHz +HSync +VSync
> h: width 1280 start 1328 end 1440 total 1688 skew 0 clock
> 63.98KHz
> v: height 1024 start 1025 end 1028 total 1066 clock
> 60.02Hz
> 1280x960 (0xb6) 108.000MHz +HSync +VSync
> h: width 1280 start 1376 end 1488 total 1800 skew 0 clock
> 60.00KHz
> v: height 960 start 961 end 964 total 1000 clock
> 60.00Hz
> 1024x768 (0xb7) 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
> 800x600 (0xb8) 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 (0xb9) 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
> 640x480 (0xba) 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
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--
Jani Nikula, Intel Open Source Technology Center
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