--- On Wed, 5/19/10, Jin, Gordon <gordon....@intel.com> wrote:
> From: Jin, Gordon <gordon....@intel.com> > Subject: RE: [Intel-gfx] Picture quality on laptop LCD with i915GM chipset > To: "SD" <sd.dom...@yahoo.com>, "intel-gfx@lists.freedesktop.org" > <intel-gfx@lists.freedesktop.org> > Date: Wednesday, May 19, 2010, 6:03 AM > SD wrote on Wednesday, May 19, 2010 > 8:32 AM: > >>> From: Clemens Eisserer <linuxhippy at > gmail.com> > >>> Subject: Re: [Intel-gfx] Picture quality on > laptop LCD with i915GM > >>> chipset. To: "intel-gfx" <intel-gfx at > lists.freedesktop.org> > >>> Date: Saturday, May 15, 2010, 12:56 PM > >>> Hi, > >>> > >>> Why don't you record a video or take a > screenshot to make > >>> at least > >>> clear to us whats going on? > >>> > >>> - Clemens > >> > >> I do not blame anyone, I know you all want to > help. > >> I tried to take a picture and take a video, but > unfortunately 30 > >> frame per second can't catch it. Everything looks > nice. > >> I will try to explain again. In compare with > kernel up to 2.6.27 > >> (because I used Ubuntu, Mandriva), 2.6.33 > looks:more brighter, may > >> be more contrast, especially white, it is > definitely more brighter > >> although I stated xgamma 0.75. But biggest problem > is that colors of > >> the picture are not solid, stable - they are > somehow blinking or > >> flickering. Sometime I think may be back lights of > LCD panel works > >> different. And after hour or two eyes start notice > it, it is looks > >> like colors is not constant, they always changes, > little bit but > >> they are "playing". It is very noticeable if I log > into different > >> TTY (not graphical) and just start "mc" - it > present for eyes. > >> It is impossible to record, sorry. > >> > >> Thanks for help. > >> > >>> > >>>> I have tried OpenSuse 11.2, which is with > newer kernel > >>> and it shows the same bad like Fedora 12. So I > decided to > >>> shift on fedora, but unfortunately although > Fedora 13 shows > >>> screen better - it is still not usable > (actually screen > >>> picture on Fedora 12 was really awful). I have > tried to > >>> compare video output on OpenSuse 11.1 and > Fedora 13, all of > >>> the has the same, except of "xdpyinfo": on > suse it tells > >>> about 3 visuals ( number of visuals: > 3), but on Fedora > >>> 13 - 32 visuals. Fedora 12 got 72. > >>>> > >>>> Problems is not with fonts at all, problem > with whole > >>> screen. Font, because it very contrast, is > more noticeable. > >>> Also, of course I use freetype for the full > hinting. > >>>> Does it happened to all intel chipset, or > to only > >>> i915GM, because I of course going to change my > laptop, and > >>> it looks like I am not going to by a one with > intel video. > >>>> > >>>> Thanks. > > > > > > > > Dear All. > > > > At last, I found the problem - it is new kernel 33 and > 34, I took > > them from Fedora. > > I put them to my OpenSuse 11.1 (27 kernel) and boot it > up. > > Picture of the screen became unusable. And it is not > Xorg with its > > drivers, because except of the kernel everything from > OpenSuse 11.1 - > > it is kernel. > > I do not know how it works with other GPU (intel or > nvidia), but mine > > i915GM shows awful screen. > > I know what is wrong with picture - colors of the > pixels. They are > > not static, they change. Little bit, but change. It > became more > > noticeable when I just reboot. For example white - it > is white, but > > it changes around white, and as color is brighter it > is more > > annoying. > > Flickering? Does booting kernel with i915.powersave=0 > work? > > > May be I am wrong about all of it, I for sure - I am > not > > going to use 33 and 34 kernel with i915GM. > > Just checked on Fedora Rawhide 34 kernel. Booted with i915.powersave=0 - there is no difference. I would say that pixel changes brightness. For example, I found a 1 pixel line on fxce panel - white line surrounding by gray aria. And it is possible to notice that pixels on gray line next to white is not constantly gray, they are flickering or changing brightness. _______________________________________________ Intel-gfx mailing list Intel-gfx@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/intel-gfx