On Mon Jul14'25 04:17:29PM, Community Support for Fedora Users wrote: > From: Ranjan Maitra via users <users@lists.fedoraproject.org> > Date: Mon, 14 Jul 2025 16:17:29 -0500 > To: Community support for Fedora users <users@lists.fedoraproject.org> > Cc: Ranjan Maitra <mlmai...@gmx.com> > Reply-To: Community support for Fedora users <users@lists.fedoraproject.org> > Subject: Re: Dell Latitude 7420's camera not working on new F42 install > > Thanks for this! > > On Mon Jul14'25 03:53:35PM, Ben Matteson wrote: > > From: Ben Matteson <bmatt...@gmail.com> > > Date: Mon, 14 Jul 2025 15:53:35 -0500 > > To: Community support for Fedora users <users@lists.fedoraproject.org> > > CC: Ranjan Maitra <mlmai...@gmx.com> > > Reply-To: Community support for Fedora users <users@lists.fedoraproject.org> > > Subject: Re: Dell Latitude 7420's camera not working on new F42 install > > > > On Mon, 2025-07-14 at 13:27 -0500, Ranjan Maitra via users wrote: > > > Hi, > > > > > > I installed F42 from scratch on a Dell Latitude 7420 about a month > > > ago, and only now have I noticed that the in-built camera does not > > > appear to be working. I just get a black screen. > > > > > > Perhaps it is missing a driver or something else. I am still runnning > > > 6.15.4-200 kernel, though the system is up to date. (Since I > > > > > > > > > This is probably the issue with the Intel "mipi" camera drivers. > > Most Dell machines ship with the "mipi" camera that is only partially > > supported in the kernel. Hans de Goede has been working on support for > > this in the kernel and in Fedora > > (https://hansdegoede.dreamwidth.org, https://hansdegoede.livejournal.com/ > > ). Just check for his posts on ipu6. > > > > There are multiple pieces that need to be installed to make this camera > > work. Some of the drivers are already in the kernel, but there are some > > sensors included in newer Dells that aren't supported yet. > > > > You can see if the camera on this particular Dell works by installing > > the akmod-intel-ipu6 driver from rpmfusion-nonfree. I believe it > > requires Secure Boot to be disabled (it builds an unsigned kernel > > module). > > > > Interesting, this laptop is about three years old. I would not have thought > this as a new laptop. > > BUt I could not install, having got, from > > > sudo dnf install akmod-intel-ipu6 > > ...... > >>> Running post-install scriptlet: akmods-0:0.6.0-9.fc42.noarch > >>> > >>> Finished post-install scriptlet: akmods-0:0.6.0-9.fc42.noarch > >>> > >>> Scriptlet output: > >>> > >>> Created symlink > >>> '/etc/systemd/system/multi-user.target.wants/akmods.service' > >>> > >>> > [25/34] Installing v4l2loopback-0:0.15. 100% | 6.1 MiB/s | 80.6 KiB | > 00m00s > [26/34] Installing akmod-v4l2loopback-0 100% | 9.2 MiB/s | 103.5 KiB | > 00m00s > [27/34] Installing v4l2-relayd-0:0.1.2- 100% | 1.5 MiB/s | 44.3 KiB | > 00m00s > >>> Running post-install scriptlet: > >>> v4l2-relayd-0:0.1.2-14.20220126git2e4d5c9.fc > >>> Finished post-install scriptlet: > >>> v4l2-relayd-0:0.1.2-14.20220126git2e4d5c9.f > >>> Scriptlet output: > >>> > >>> Created symlink > >>> '/etc/systemd/system/multi-user.target.wants/v4l2-relayd.ser > >>> > >>> > [28/34] Installing gstreamer1-plugins-i 100% | 61.7 MiB/s | 252.8 KiB | > 00m00s > [29/34] Installing ipu6-camera-hal-0:0. 100% | 479.1 MiB/s | 39.3 MiB | > 00m00s > [30/34] Installing ipu6-camera-bins-0:0 100% | 701.4 MiB/s | 23.1 MiB | > 00m00s > [31/34] Installing akmod-intel-ipu6-0:0 100% | 37.3 MiB/s | 420.1 KiB | > 00m00s > [32/34] Installing python3-rpmautospec- 100% | 40.0 MiB/s | 450.2 KiB | > 00m00s > [33/34] Installing systemd-rpm-macros-0 100% | 11.0 MiB/s | 11.3 KiB | > 00m00s > [34/34] Installing cmake-rpm-macros-0:3 100% | 10.6 KiB/s | 8.3 KiB | > 00m01s > >>> Running post-transaction scriptlet: > >>> ipu6-camera-hal-0:0.0-24.20241218gitb6f6 > >>> Non-critical error in post-transaction scriptlet: > >>> ipu6-camera-hal-0:0.0-24.2 > >>> Scriptlet output: > >>> > >>> Failed to open the device '/sys/devices/pci0000:00/0000:00:05.0': No such > >>> de > >>> > >>> > >>> [RPM] %posttrans(ipu6-camera-hal-0.0-24.20241218gitb6f6eeb.fc42.x86_64) > >>> scri > Complete! > > What does the above mean? What should I do here? > > > > > After the dnf install completes, make sure to give time for the kernel > > module build to complete. After that is done, reboot, and check if y > > our camera is working: > > https://mozilla.github.io/webrtc-landing/gum_test.html.
As an update, rebooting and waiting for the system to come up, that webpage above does say "Success" but the camera window is black. Best wishes, Ranjan -- _______________________________________________ users mailing list -- users@lists.fedoraproject.org To unsubscribe send an email to users-le...@lists.fedoraproject.org Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/users@lists.fedoraproject.org Do not reply to spam, report it: https://pagure.io/fedora-infrastructure/new_issue
