After upgrading to F40 KDE, brightness on my 2nd display went extremely low when logged into Wayland.
The brightness is as expected when logged in to Plasma (x11).
There’s no way to set brightness/contrast/chroma using the nvidia panel on Wayland (logged in as Plasma), but as soon as I change session to Plasma X11.
$> lspci | grep -E 'VGA|3D'
01:00.0 VGA compatible controller: NVIDIA Corporation GM107GL [Quadro K2200] (rev a2)
etc/default/grub:
GRUB_CMDLINE_LINUX="rd.driver.blacklist=nouveau modprobe.blacklist=nouveau rd.driver.blacklist=nouveau modprobe.blacklist=nouveau"
$> nvidia-smi
Thu Nov 14 22:00:32 2024
+-----------------------------------------------------------------------------------------+
| NVIDIA-SMI 565.57.01 Driver Version: 565.57.01 CUDA Version: 12.7 |
|-----------------------------------------+------------------------+----------------------+
| GPU Name Persistence-M | Bus-Id Disp.A | Volatile Uncorr. ECC |
| Fan Temp Perf Pwr:Usage/Cap | Memory-Usage | GPU-Util Compute M. |
| | | MIG M. |
|=========================================+========================+======================|
| 0 Quadro K2200 Off | 00000000:01:00.0 On | N/A |
| 42% 55C P0 3W / 39W | 1532MiB / 4096MiB | 0% Default |
| | | N/A |
+-----------------------------------------+------------------------+----------------------+
+-----------------------------------------------------------------------------------------+
| Processes: |
| GPU GI CI PID Type Process name GPU Memory |
| ID ID Usage |
|=========================================================================================|
| 0 N/A N/A 9273 G /usr/bin/kwalletd6 1MiB |
| 0 N/A N/A 9517 G /usr/bin/kwin_wayland 483MiB |
| 0 N/A N/A 9572 G /usr/bin/maliit-keyboard 53MiB |
| 0 N/A N/A 9580 G /usr/bin/Xwayland 202MiB |
| 0 N/A N/A 9628 G /usr/bin/ksmserver 1MiB |
| 0 N/A N/A 9632 G /usr/bin/kded6 1MiB |
| 0 N/A N/A 9658 G /usr/bin/plasmashell 409MiB |
| 0 N/A N/A 9677 G /usr/libexec/kactivitymanagerd 1MiB |
| 0 N/A N/A 9711 G /usr/bin/gmenudbusmenuproxy 1MiB |
| 0 N/A N/A 9712 G /usr/bin/kaccess 1MiB |
| 0 N/A N/A 9713 G ...6/polkit-kde-authentication-agent-1 1MiB |
| 0 N/A N/A 9714 G /usr/libexec/org_kde_powerdevil 1MiB |
| 0 N/A N/A 9715 G /usr/libexec/xdg-desktop-portal-kde 1MiB |
| 0 N/A N/A 9716 G /usr/bin/xembedsniproxy 1MiB |
| 0 N/A N/A 9836 G /usr/bin/kdeconnectd 1MiB |
| 0 N/A N/A 9943 G /usr/bin/xwaylandvideobridge 1MiB |
| 0 N/A N/A 9988 G /usr/libexec/DiscoverNotifier 1MiB |
| 0 N/A N/A 9990 G /usr/bin/kalendarac 1MiB |
| 0 N/A N/A 10039 G /usr/bin/python3 1MiB |
| 0 N/A N/A 10054 G /usr/bin/akonadi_control 1MiB |
| 0 N/A N/A 10188 G /usr/bin/akonadi_akonotes_resource 1MiB |
| 0 N/A N/A 10189 G /usr/bin/akonadi_archivemail_agent 1MiB |
| 0 N/A N/A 10190 G /usr/bin/akonadi_birthdays_resource 1MiB |
| 0 N/A N/A 10191 G /usr/bin/akonadi_contacts_resource 1MiB |
| 0 N/A N/A 10192 G .../bin/akonadi_followupreminder_agent 1MiB |
| 0 N/A N/A 10193 G /usr/bin/akonadi_ical_resource 1MiB |
| 0 N/A N/A 10194 G /usr/bin/akonadi_indexing_agent 1MiB |
| 0 N/A N/A 10195 G /usr/bin/akonadi_maildir_resource 1MiB |
| 0 N/A N/A 10196 G /usr/bin/akonadi_maildispatcher_agent 1MiB |
| 0 N/A N/A 10197 G /usr/bin/akonadi_mailfilter_agent 1MiB |
| 0 N/A N/A 10198 G /usr/bin/akonadi_mailmerge_agent 1MiB |
| 0 N/A N/A 10199 G /usr/bin/akonadi_migration_agent 1MiB |
| 0 N/A N/A 10200 G /usr/bin/akonadi_newmailnotifier_agent 1MiB |
| 0 N/A N/A 10201 G /usr/bin/akonadi_sendlater_agent 1MiB |
| 0 N/A N/A 10202 G /usr/bin/akonadi_unifiedmailbox_agent 1MiB |
| 0 N/A N/A 10403 G /opt/google/chrome/chrome 1MiB |
| 0 N/A N/A 10448 G ...seed-version=20241114-050102.167000 182MiB |
| 0 N/A N/A 11360 G /usr/bin/konsole 1MiB |
+-----------------------------------------------------------------------------------------+