| Bug ID | 105651 |
|---|---|
| Summary | Vega64 doesn't output properly onto dell up2715k at 5120x2880 |
| Product | DRI |
| Version | unspecified |
| Hardware | Other |
| OS | All |
| Status | NEW |
| Severity | normal |
| Priority | medium |
| Component | DRM/AMDgpu |
| Assignee | dri-devel@lists.freedesktop.org |
| Reporter | spgle212@gmail.com |
I have tested 4.16 and drm-next-4.17 both under wayland and xo= rg. All only show the monitor as 2 displays with 2560x2880 side by side. (I previously had an nvidia gpu using their binary blob on this display wit= hout issue)
| What | Removed | Added |
|---|---|---|
| See Also | https://bugs.freedesktop.org/show_bug.cgi?id=3D99801 |
| What | Removed | Added |
|---|---|---|
| See Also | https://bugs.freedesktop.org/show_bug.cgi?id=3D105198 |
| What | Removed | Added |
|---|---|---|
| See Also | https://bugs.freedesktop.org/show_bug.cgi?id=3D97244 |
amdgpu doesn't currently have support for tiled displays. It's= expected with tiled displays that you see them as you describe.
| What | Removed | Added |
|---|---|---|
| Resolution | --- | NOTOURBUG |
| Status | NEW | RESOLVED |
This is handled at the Desktop level. There are quite a few l= arge format displays that show up as multiple DP MST displays, even a number of early 4k displays. X exposes the tile info via randr 1.5 and the desktop environment should handle it as a single monitor. Mutter handles this in GNOME for example. https://cgit.freedesktop.org/xorg/xserver/= commit/?id=3D7e1f86d42b54fb7f6492875e47a718eaeca3069b https://lists.x.org/archives/xorg-announce/2015-May/002605.html https://mail.gnome.org/archives/desktop-devel-list/2015-Nov= ember/msg00018.html
| What | Removed | Added |
|---|---|---|
| Resolution | NOTOURBUG | --- |
| Status | RESOLVED | REOPENED |
Yes it is handled at Desktop level. (https://gitla= b.gnome.org/GNOME/mutter/issues/110) But the tile property has to be exposed from kernel driver as far as i understand. Which was not the case in my setup with amdgpu. With the new pa= tch from here https://gitlab.freedesktop.org/xorg/driver/xf86-video-amdgp= u/merge_requests/32 it should work but i can not see any tiled properties.
| What | Removed | Added |
|---|---|---|
| See Also | https://bugs.freedesktop.org/show_bug.cgi?id=3D110671 |
For this to work the TILE property (blob) of the connector has= to be exposed. modetest does not return it.
xrandr --props also does not return the tile property.
I'm having the same issue with a 4K Dell UP2414Q with 3840x216= 0 as 1920x2160+0+0, 1920x2160 +1920+0. Is it possible to do a workaround in xorg.conf, similar to nVidia's TwinView and nvidiaXineramaInfoOrder as described in this question? https://unix.stackexchange.c= om/questions/536175/how-do-i-tile-two-displays-onto-one-monitor-with-amd-gr= aphics
You need to be using the amdgpu driver if you are running xorg= . I'm not sure if the modesetting driver supports the tile property yet.
FYI starting with kernel 5.2 the tile property is propagated p= roperly on Dell UP2715K. The Mate desktop picks this up just fine.
@AlexDeucher I am using xserver-xorg-video-amdgpu. I can u= se 18.0.1 (No TILE support, need workaround) or 19.0.1 (Cinnamon crashes, need workaround for = time being). I'm looking for a xorg config or xrandr command that works like nVidia's TwinView that I can keep in place while I am checking TILE support with this DM and kernel from time to time. (I am new to AMD/Radeon.) @TomasBzatek I still need a workaround because Cinnamon crashes on 5.2 = w/ 19.0.1 TILE support. See https://github.com/linuxmint/cinnamon/issues/8807
| What | Removed | Added |
|---|---|---|
| Status | REOPENED | RESOLVED |
| Resolution | --- | FIXED |
Fixed in 5.2. Now only syncing issues are remaining but thats = another bug (110671)