On Thu, Apr 01, 2014 Felix Miata wrote: > On 2014-03-31 10:05 (GMT+0200) Janus composed: >> I have the same problem as the one described by Michael bellow: the >> Intel Graphic card produces eye strain and headache after some minutes >> of using it. I found a lot of people complaining on the same problem, >> but no solution. I tried lowering the resolution, increasing the PWM >> frequency, but without luck. I also installed an old version of intel >> drivers (2.20.12), because the subject of this email was "with **new** >> Intel drivers", but it didn't help. >> >> I have a new HP Folio 9470m, with the Intel HD 4000 graphic card, and >> I cannot use it. Even when connecting an external monitor, I have the >> same problem. When I connect my old laptop, with an nvidia card, to >> the same monitor, the eyestrain disapear, so it must be the Intel >> card, or its driver. >> >> I will be glad to provide any information you consider relevant. I can >> do whatever test you want, but please, do not ignore this message. I >> am not the only one to have this problem: >> https://www.google.com/search?q=Eye+strain+Intel+graphic >> >> I am on (Arch) Linux, but I saw some reports on Windows too. > > What is output from 'lspci | grep VGA'? $ lspci -v -s 00:02.0 00:02.0 VGA compatible controller: Intel Corporation 3rd Gen Core processor Graphics Controller (rev 09) (prog-if 00 [VGA controller]) Subsystem: Hewlett-Packard Company Device 18df Flags: bus master, fast devsel, latency 0, IRQ 49 Memory at d0000000 (64-bit, non-prefetchable) [size=4M] Memory at c0000000 (64-bit, prefetchable) [size=256M] I/O ports at 2000 [size=64] Expansion ROM at <unassigned> [disabled] Capabilities: <access denied> Kernel driver in use: i915 Kernel modules: i915 > Exactly what model is your external display? It is an HP ZR2440w connected through the DisplayPort output of the Docking Station (HP UltraSlim Docking Station). $ xrandr --verbose [...] DP1 connected primary 1920x1200+0+0 (0xf7) normal (normal left inverted right x axis y axis) 518mm x 324mm Identifier: 0x46 Timestamp: 25911732 Subpixel: unknown Gamma: 1.0:1.0:1.0 Brightness: 1.0 Clones: CRTC: 0 CRTCs: 1 0 2 Transform: 1.000000 0.000000 0.000000 0.000000 1.000000 0.000000 0.000000 0.000000 1.000000 filter: EDID: 00ffffffffffff0022f0542900000000 22160104a534207823fc81a4554d9d25 125054210800d1c081c0814081809500 a940b3000101283c80a070b023403020 360006442100001a000000fd00183c18 5011000a202020202020000000fc0048 50205a5232343430770a2020000000ff 00434e34323334313150370a20200159 020319c14c901f051404130302070612 012309070783010000023a801871382d 40582c450006442100001e023a80d072 382d40102c458006442100001e011d00 7251d01e206e28550006442100001e01 1d00bc52d01e20b82855400644210000 1e8c0ad08a20e02d10103e9600064421 0000180000000000000000000000007b Broadcast RGB: Automatic supported: Automatic, Full, Limited 16:235 audio: auto supported: force-dvi, off, auto, on 1920x1200 (0xf7) 154.000MHz +HSync -VSync *current +preferred h: width 1920 start 1968 end 2000 total 2080 skew 0 clock 74.04KHz v: height 1200 start 1203 end 1209 total 1235 clock 59.95Hz [...] > Does disabling compositing help? No, it doesn't. > Is it better if you boot a Live Linux media from a year or two or > three ago, e.g. Knoppix 7.0.5 or openSUSE 12.3 or Mageia 2 or Fedora > 18? I tested with openSUSE 12.3, but I had the same problem. Thank you for your suggestions. Any other idea? On Mon, Jan 9, 2014 at 3:30 PM, Michael Vanier wrote: > http://lists.freedesktop.org/archives/intel-gfx/2014-January/038104.html _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/intel-gfx
