Hello I tested with the patches applied. Xrandr shows the available interlaced modes automatically. xrandr --output VGA1 --off xrandr --output HDMI3 --mode 1920x1080 --rate 25 The television flickers. The lower part of the desktop is visible (lower menu with wastebin) in the upper left quadrant. I start with VGA1 connected too, so that grub is shown in 1024x768 mode. During boot both flicker, which they didn't before. Both show a desktop in 1024x768 correct. Changing HDMI3 to 1920x1080, the VGA1 stays in the 1024x768 mode, both flicker. With the noveau driver (GTX275) I hadn't any side-effects. I personally don't need a VGA1 connection, so I disconnected it for my test, see attached logs. If screenshots are welcome, please tell me how. Yi already mentioned that SandyBridge still has a problem, which I can confirm for my GT2+. Any patches for testing are welcome. Angela Settings used: wget http://paste.debian.net/download/152705 wget http://paste.debian.net/download/152707 wget http://paste.debian.net/download/152708 $ git am 152705 152707 152708 Applying: drm/i915: specify vertical timings in frame units for interlaced modes (gen3+) Applying: drm/i915: allow interlaced mode output on the SDVO connector Applying: drm/i915: allow interlaced mode output on the HDMI connector > -----Original Message----- > From: Angela Schmid [mailto:angela.schmid at wolke7.net] > Sent: 20 January 2012 19:07 > To: 'Alfonso Fiore'; 'Peter Ross' > Cc: 'Daniel Vetter'; 'Rodrigo Vivi' > Subject: RE: Sandy Bridge Desktop - 1920x1080i interlace not working > > Hello > > From my first mail: > I have a Philips 37pf9830 television (at 1920x1080 only interlace possible) over Sandy Bridge HDMI. Changing to > 1920x1080i is not working. > Nvidia noveau with GTX275 (using yellow DVI->HDMI Adapter) , grub2 (vesa?), Windows 7 over HDMI and a Windows 7 > laptop with AMD graphics with HDMI all work fine. > I tried several other modelines, which work for the noveau driver, but not for the intel driver. > The highest resolution possible is "1280x720 at 50hz" 74.25 1280 1720 1760 1980 720 725 730 750 +hsync +vsync > > When using only HDMI grub2 will start in 1080i but xorg is not visible afterwards. > For booting I have to add a DVI display to start grub2 in a lower resolution. Either disconnect as soon as > possible or I use xrandr -output VGA1 -off > > Addition: > I hadn't time to test the fixes. I will have a look next week. > > Angela > > > -----Original Message----- > > From: Alfonso Fiore [mailto:alfonso.fiore at gmail.com] > > Sent: 20 January 2012 13:53 > > To: Peter Ross > > Cc: Daniel Vetter; Rodrigo Vivi; Angela Schmid > > Subject: Re: Sandy Bridge Desktop - 1920x1080i interlace not working > > > > Angela, > > > > please have a look and comment below. > > > > thanks, > > alfonso > > > > On Fri, Jan 20, 2012 at 1:40 PM, Peter Ross <pross at xvid.org> wrote: > > > > > > What concerns me is that some other folk have reported working > > > interlaced output on the Sandy Bridge chipset. So I'm left thinking > > > your TV device may be very fussy about the signal timings, hence > > > why you get a blue 'no signal' screen. > > > > > > PATCH-v2 has a problem, where the vertical timings are off by > > > two lines (giving 1920x1078i, instead of 1080i). Your TV may > > > reject this mode, > > > > > > The enclosed patch corrects this problem. It should be applied on-top > > > of the PATCHv2 set. Rebuild your kernel and try changing to an > > > interlaced mode using xrandr. > > > > > > Otherwise, we have kind of exhausted all the readily available options > > > here. The next step would be to reverse engineer the Intel windows > > > driver, since you reported it to output 1080i to your TV. > > > > Peter, my apologies if I mislead you. > > > > I've never seen any 1080i resolution on my TV. Maybe Angela did? > > > > I only saw a working 1024x768 resolution (which is now achieved > > constantly with the hack of connecting both VGA and HDMI cable to the > > same TV). > > > > Can you please tell me which commands to apply the patch of the patch? > > > > thank you, > > alfonso -------------- next part -------------- A non-text attachment was scrubbed... Name: try1_1.tar.gz Type: application/x-gzip Size: 39561 bytes Desc: not available URL: <http://lists.freedesktop.org/archives/intel-gfx/attachments/20120121/6b54817f/attachment-0001.bin>
