[Bug 1890418] Re: i915 does not expose vendor-specific extended HDMI timings/modes

2020-08-06 Thread Daniel van Vugt
Yes, find the new packages' names: dpkg -l | grep 5.8.0-050800 and then purge them: sudo dpkg -P ... -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1890418 Title: i915 does not expose

[Bug 1890418] Re: i915 does not expose vendor-specific extended HDMI timings/modes

2020-08-06 Thread Leo Ramakersuca
Daniel I successfully ran the dpkg process as you illustrated but it then failed to boot, so now I must manually selected the 5.4 version in order to get to this boot. Is there a way to reverse that? -- You received this bug notification because you are a member of Ubuntu Bugs, which is

[Bug 1890418] Re: i915 does not expose vendor-specific extended HDMI timings/modes

2020-08-05 Thread Daniel van Vugt
To test kernel 5.8 you need to download all these packages EXCEPT the "lowlatency" ones: https://kernel.ubuntu.com/~kernel-ppa/mainline/v5.8/amd64/ and then install them all at once: sudo dpkg -i *.deb -- You received this bug notification because you are a member of Ubuntu Bugs, which is

[Bug 1890418] Re: i915 does not expose vendor-specific extended HDMI timings/modes

2020-08-05 Thread Daniel van Vugt
The attachment in comment #10 confirms the problem is happening at a low level in the kernel. Although Xorg could override that if it was smart enough. In theory you can do it manually but would need to become an expert at crafting modeline entries to get it working. I don't know how myself. If

[Bug 1890418] Re: i915 does not expose vendor-specific extended HDMI timings/modes

2020-08-05 Thread Leo Ramakersuca
I found the information, at section 3.4 of the manual https://dlcdnets.asus.com/pub/ASUS/LCD%20Monitors/PB287/PB287Q_English.pdf where VESA / IBM Modes Support Timing (DP/HDMI) reaches 4k but CEA-861 Formats Supported Timing (HDMI/MHL) only reach 1920 -- You received this bug notification

[Bug 1890418] Re: i915 does not expose vendor-specific extended HDMI timings/modes

2020-08-05 Thread Leo Ramakersuca
Regarding HDMI version the spec which I gave a link to claims; True Resolution : 3840x2160 at 60Hz (DisplayPort) ,3840x2160 at 30Hz (HDMI) Some while ago I was researching this issue and found a specification page on the ASUS website which showed two formats for declaring the frame rate, one

[Bug 1890418] Re: i915 does not expose vendor-specific extended HDMI timings/modes

2020-08-05 Thread Leo Ramakersuca
Thanks for your work I just bought and tried a new 4K hdmi cable, with no change. I noticed that the monitor has TWO inputs, HDMI and HDMI/MHL (it had been plugged into HDMI) but switching this to HDMI/MHL gave no result. I am using MATE but the same issue occurs in several flavours of Ubuntu

[Bug 1890418] Re: i915 does not expose vendor-specific extended HDMI timings/modes

2020-08-05 Thread Daniel van Vugt
This might have been fixed in the Intel graphics driver in a newer kernel. Can you please test this one? https://kernel.ubuntu.com/~kernel-ppa/mainline/v5.8/ -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu.

[Bug 1890418] Re: i915 does not expose vendor-specific extended HDMI timings/modes

2020-08-05 Thread Daniel van Vugt
Please also run this command: grep . /sys/class/drm/*/modes > kernel-modes.txt and attach the resulting text file here. ** Changed in: linux (Ubuntu) Status: New => Incomplete ** Changed in: xorg-server (Ubuntu) Status: New => Incomplete -- You received this bug notification