deepin Hi,
I have a 3 UHD monitors configuration with Amd Navi 10 GPU (all three connected via displayport).
After upgrade, and with both new kernels (5.12.3 and 5.10.36), only the main monitor is detected, and resolution is limited to 2560*1440.
If I choose to boot with an "old" kernel, everything is fine.
Is that supposed to be a known bug ?
Thank you.
deepin Extracts from journalctl -b :
mai 29 12:03:02 DeepinOS-Desktop daemon/display[3793]: util.go:456: failed to get current using graphics card pci id
mai 29 12:03:02 DeepinOS-Desktop daemon/display[3793]: manager.go:1093: failed to set brightness for default: The output(1314) has invalid gamma size
mai 29 12:03:02 DeepinOS-Desktop daemon/display[3793]: handle_event.go:176: redo map touch screen
mai 29 12:03:02 DeepinOS-Desktop startdde[3793]: session_process.go:91: command /usr/bin/kwin_no_scale [] started, pid: 3944
mai 29 12:03:02 DeepinOS-Desktop daemon/display[3793]: util.go:456: failed to get current using graphics card pci id
Yet, it seems the graphic card is present and recognized :
$lspci | grep VGA
35:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Navi 10 [Radeon RX 5600 OEM/5600 XT / 5700/5700 XT] (rev c1)
deepin Also, wake from sleep does not work for me with kernel 5.12.3.
But it seems to be a known bug of this release (for example : https://bbs.archlinux.org/viewtopic.php?pid=1973407#p1973407)
deepin OK, I have solved the issue regarding amdgpu uhd resolution.
I do not know why, but a "blacklist amdgpu" was present in a configuration file in /etc/modprobe.d
Once I removed this file, everything was fine.
Now, back to hibernation issue...
deepin Hi, I have the following config, but Deepin Graphic Driver Manager does not find any driver.
CPU : AMD Ryzen 7 3750H with Radeon Vega Mobile Gfx (Quattro Core(s) / Otto Thread)
Video: TU117M [GeForce GTX 1650 Mobile / Max-Q]/Picasso
RAM: 4GB(4ATF51264HZ-3G2J1 DDR4 3200MHz (0.3ns))/4GB(4ATF51264HZ-3G2J1 DDR4 3200MHz (0.3ns))
中文 
How to create shortcut like in Windows? 
Dear deepin friends, in order to ensure version quality of the next update, we're now launching internal testing seeking participation from all members in this team.
Changelog:
1. Upgrade dual kernels to further improve system stability and compatibility.LTS kernel iteration is upgraded to Kernel 5.10.36 (update instructions:Learn More),and Stable kernel is upgraded to Kernel version 5.12 (update description:Learn More).
2. Nvidia driver is updated and added support for different GPU models.
3. Some deepin applications are upgraded to improve the overall experience, including Downloader, Browser, File Manager, Album, Screen Capture, Music, Draw and Image Viewer.
Test Procedure
Upgrade method:（The internal test version may be unstable. Please do not use it in production environment）
sudo deepin-editor /etc/apt/sources.list
3、Execute sudo apt-get update && sudo apt-get dist-upgrade command in terminal. After upgrade successful, please reboot your computer.
Note:
How to manually upgrade your kernel:sudo apt install linux-image-deepin-stable-amd64 linux-headers-deepin-stable-amd64
Attention
Acknowledgments
Many thanks to all the Internal Testing Team members for your active participation!