<html> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> <style type="text/css" style="display:none;"> P {margin-top:0;margin-bottom:0;} </style> </head> <body dir="ltr"> <div style="font-family: Aptos, "Aptos_EmbeddedFont", "Aptos_MSFontService", Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);" class="elementToProof"> Hello everyone,</div> <div style="font-family: Aptos, "Aptos_EmbeddedFont", "Aptos_MSFontService", Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);" class="elementToProof"> <br> </div> <div style="font-family: Aptos, "Aptos_EmbeddedFont", "Aptos_MSFontService", Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);" class="elementToProof"> I try to run a run an (qt) app accelerated by the upstream etnaviv driver on an i.MX6 DL based SBC, but I just cannot get it working...</div> <div style="font-family: Aptos, "Aptos_EmbeddedFont", "Aptos_MSFontService", Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);" class="elementToProof"> <br> </div> <div style="font-family: Aptos, "Aptos_EmbeddedFont", "Aptos_MSFontService", Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);" class="elementToProof"> What I did so far:</div> <ul data-editing-info="{"applyListStyleFromLevel":false,"unorderedStyleType":2}" style="margin-top: 0px; margin-bottom: 0px;"> <li style="font-family: Aptos, "Aptos_EmbeddedFont", "Aptos_MSFontService", Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0); list-style-type: "- ";"> <div role="presentation" class="elementToProof">I patched the imx-drm back from NXP version (since its adapted to their closed source galcore driver) to vanilla version, which should work with etnaviv. Dmesg shows also "Initialized etnaviv 1.3.0 20151214 for etnaviv on minor 0" and " Initialized imx-drm 1.0.0 20120507 for display-subsystem on minor 1". So I expect both kernel drivers to work.</div> </li><li style="font-family: Aptos, "Aptos_EmbeddedFont", "Aptos_MSFontService", Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0); list-style-type: "- ";"> <div role="presentation" class="elementToProof">I installed a Ubuntu 22.04 with a slightly modified NXP Linux kernel in version 5.15.148 and used from Ubuntu 22.04 mesa in version 23.2.1</div> </li><li style="font-family: Aptos, "Aptos_EmbeddedFont", "Aptos_MSFontService", Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0); list-style-type: "- ";"> <div role="presentation" class="elementToProof"> I put my qt application on it based on qt 5.15.3. When i select the linuxfb backend i can see the qt application on my screen. So the hardware is ok.</div> </li><li style="font-family: Aptos, "Aptos_EmbeddedFont", "Aptos_MSFontService", Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0); list-style-type: "- ";"> <div role="presentation" class="elementToProof">After adjusting the device tree from NXP galcore to etnaviv i can see the /dev/dri/card0, /dev/dri/renderD128 and /dev/dri/card1</div> </li></ul> <div style="font-family: Aptos, "Aptos_EmbeddedFont", "Aptos_MSFontService", Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);" class="elementToProof"> <br> </div> <div style="font-family: Aptos, "Aptos_EmbeddedFont", "Aptos_MSFontService", Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);" class="elementToProof"> After starting my Qt application i got following error:</div> <div class="elementToProof" style="margin-left: 40px; font-family: Aptos, "Aptos_EmbeddedFont", "Aptos_MSFontService", Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);"> qt.qpa.egldeviceintegration: EGL device integration plugin keys: ("eglfs_kms")</div> <div class="elementToProof" style="margin-left: 40px; font-family: Aptos, "Aptos_EmbeddedFont", "Aptos_MSFontService", Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);"> qt.qpa.egldeviceintegration: EGL device integration plugin keys (sorted): ("eglfs_kms")</div> <div class="elementToProof" style="margin-left: 40px; font-family: Aptos, "Aptos_EmbeddedFont", "Aptos_MSFontService", Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);"> qt.qpa.egldeviceintegration: Trying to load device EGL integration "eglfs_kms"</div> <div class="elementToProof" style="margin-left: 40px; font-family: Aptos, "Aptos_EmbeddedFont", "Aptos_MSFontService", Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);"> qt.qpa.eglfs.kms: Loading KMS setup from "/etc/eglfs_hdmi.json"</div> <div class="elementToProof" style="margin-left: 40px; font-family: Aptos, "Aptos_EmbeddedFont", "Aptos_MSFontService", Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);"> qt.qpa.eglfs.kms: Requested configuration (some settings may be ignored):</div> <div class="elementToProof" style="margin-left: 40px; font-family: Aptos, "Aptos_EmbeddedFont", "Aptos_MSFontService", Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);"> headless: false </div> <div class="elementToProof" style="margin-left: 40px; font-family: Aptos, "Aptos_EmbeddedFont", "Aptos_MSFontService", Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);"> hwcursor: false </div> <div class="elementToProof" style="margin-left: 40px; font-family: Aptos, "Aptos_EmbeddedFont", "Aptos_MSFontService", Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);"> pbuffers: true </div> <div class="elementToProof" style="margin-left: 40px; font-family: Aptos, "Aptos_EmbeddedFont", "Aptos_MSFontService", Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);"> separateScreens: false </div> <div class="elementToProof" style="margin-left: 40px; font-family: Aptos, "Aptos_EmbeddedFont", "Aptos_MSFontService", Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);"> virtualDesktopLayout: 0 </div> <div class="elementToProof" style="margin-left: 40px; font-family: Aptos, "Aptos_EmbeddedFont", "Aptos_MSFontService", Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);"> outputs: QMap(("LVDS-1", QMap(("mode", QVariant(QString, "800x600"))("name", QVariant(QString, "LVDS-1")))))</div> <div class="elementToProof" style="margin-left: 40px; font-family: Aptos, "Aptos_EmbeddedFont", "Aptos_MSFontService", Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);"> qt.qpa.eglfs.kms: New DRM/KMS via GBM integration created</div> <div class="elementToProof" style="margin-left: 40px; font-family: Aptos, "Aptos_EmbeddedFont", "Aptos_MSFontService", Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);"> qt.qpa.egldeviceintegration: Using EGL device integration "eglfs_kms"</div> <div class="elementToProof" style="margin-left: 40px; font-family: Aptos, "Aptos_EmbeddedFont", "Aptos_MSFontService", Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);"> qt.qpa.eglfs.kms: platformInit: Opening DRM device</div> <div class="elementToProof" style="margin-left: 40px; font-family: Aptos, "Aptos_EmbeddedFont", "Aptos_MSFontService", Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);"> qt.qpa.eglfs.kms: GBM: Using DRM device "/dev/dri/card1" specified in config file</div> <div class="elementToProof" style="margin-left: 40px; font-family: Aptos, "Aptos_EmbeddedFont", "Aptos_MSFontService", Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);"> qt.qpa.eglfs.kms: Using backend-provided DRM device /dev/dri/card1</div> <div class="elementToProof" style="margin-left: 40px; font-family: Aptos, "Aptos_EmbeddedFont", "Aptos_MSFontService", Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);"> qt.qpa.eglfs.kms: Creating GBM device for file descriptor 4 obtained from "/dev/dri/card1"</div> <div class="elementToProof" style="margin-left: 40px; font-family: Aptos, "Aptos_EmbeddedFont", "Aptos_MSFontService", Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);"> qt.qpa.eglfs.kms: Initalizing event reader for device 0x1a51248 fd 4</div> <div class="elementToProof" style="margin-left: 40px; font-family: Aptos, "Aptos_EmbeddedFont", "Aptos_MSFontService", Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);"> qt.qpa.eglfs.kms: Querying EGLDisplay</div> <div class="elementToProof" style="margin-left: 40px; font-family: Aptos, "Aptos_EmbeddedFont", "Aptos_MSFontService", Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);"> qt.qpa.eglfs.kms: Event reader thread: entering event loop</div> <div class="elementToProof" style="margin-left: 40px; font-family: Aptos, "Aptos_EmbeddedFont", "Aptos_MSFontService", Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);"> qt.qpa.eglfs.kms: No eglGetPlatformDisplay for GBM, falling back to eglGetDisplay</div> <div class="elementToProof" style="margin-left: 40px; font-family: Aptos, "Aptos_EmbeddedFont", "Aptos_MSFontService", Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);"> Could not open egl display</div> <div class="elementToProof" style="margin-left: 40px; font-family: Aptos, "Aptos_EmbeddedFont", "Aptos_MSFontService", Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);"> Aborted</div> <div style="font-family: Aptos, "Aptos_EmbeddedFont", "Aptos_MSFontService", Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);" class="elementToProof"> <br> </div> <div style="font-family: Aptos, "Aptos_EmbeddedFont", "Aptos_MSFontService", Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);" class="elementToProof"> <br> </div> <div style="font-family: Aptos, "Aptos_EmbeddedFont", "Aptos_MSFontService", Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);" class="elementToProof"> What i think i understood:</div> <ol data-editing-info="{"applyListStyleFromLevel":false,"orderedStyleType":1}" style="margin-top: 0px; margin-bottom: 0px; list-style-type: decimal;" start="1"> <li style="font-family: Aptos, "Aptos_EmbeddedFont", "Aptos_MSFontService", Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);"> <div role="presentation" class="elementToProof">the etnaviv kernel driver exposes the Vivante GPU as /dev/dri/card0 and /dev/dri/renderD128</div> </li><li style="font-family: Aptos, "Aptos_EmbeddedFont", "Aptos_MSFontService", Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);"> <div role="presentation" class="elementToProof">the imx-drm kernel driver exposes the IPU as /dev/dri/card1</div> </li><li style="font-family: Aptos, "Aptos_EmbeddedFont", "Aptos_MSFontService", Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);"> <div role="presentation" class="elementToProof">kms works on /dev/dri/card1 since I can see output with modetest</div> </li><li style="font-family: Aptos, "Aptos_EmbeddedFont", "Aptos_MSFontService", Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);"> <div role="presentation" class="elementToProof">the LVDS output is attached to the IPU so to /dev/dri/card1, modetest shows also that</div> </li><li style="font-family: Aptos, "Aptos_EmbeddedFont", "Aptos_MSFontService", Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);"> <div role="presentation" class="elementToProof">the Qt5 eglfs backend triggers the MESA-LOADER looks all /dev/dri/card* to find a device which supports modesetting</div> </li><li style="font-family: Aptos, "Aptos_EmbeddedFont", "Aptos_MSFontService", Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);"> <div role="presentation" class="elementToProof">the only device which supports modesetting is /dev/dri/card1 since /dev/dri/card0 has no screens/outputs</div> </li><li style="font-family: Aptos, "Aptos_EmbeddedFont", "Aptos_MSFontService", Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);"> <div role="presentation" class="elementToProof">via libdrm the MESA-LOADER finds that /dev/dri/card1 is a device which runs on imx-drm kernel driver</div> </li><li style="font-family: Aptos, "Aptos_EmbeddedFont", "Aptos_MSFontService", Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);"> <div role="presentation" class="elementToProof">since the kernel drivers name is imx-drm the MESA-LOADER loads imx-drm_dri</div> </li><li style="font-family: Aptos, "Aptos_EmbeddedFont", "Aptos_MSFontService", Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);"> <div role="presentation" class="elementToProof">Problem is not specific to qt, since kmscube ("failed to initialize EGL") and weston-simple-dmabuf-egl ("../clients/simple-dmabuf-egl.c:1375: create_display: Assertion `display->display' failed." also fail.</div> </li><li style="font-family: Aptos, "Aptos_EmbeddedFont", "Aptos_MSFontService", Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);"> <div role="presentation" class="elementToProof">In /sys/kernel/debug/dma_buf/bufinfo i should see something like exp_name and imp_name + etnaviv and imx-drm. But right now it shows only "Total 0 objects, 0 bytes", so handling from etnaviv to imx-drm does not work at all.</div> </li><li style="font-family: Aptos, "Aptos_EmbeddedFont", "Aptos_MSFontService", Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);"> <div role="presentation" class="elementToProof">Ubuntu's mesa build uses the mega mesa driver so all drivers are include in one shared object. Which drivers are contained i can see with strings etnaviv_dri.so | grep __driDriverGetExtensions. Since i see __driDriverGetExtensions_etnaviv and __driDriverGetExtensions_imx_drm the necessary driver / stub driver is included. The drivers filename needs to correspond <kernel driver name >_dri.so</div> </li></ol> <div style="font-family: Aptos, "Aptos_EmbeddedFont", "Aptos_MSFontService", Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);" class="elementToProof"> <br> </div> <div style="font-family: Aptos, "Aptos_EmbeddedFont", "Aptos_MSFontService", Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);" class="elementToProof"> Please correct me if one or more of these assumptions is wrong.</div> <div style="font-family: Aptos, "Aptos_EmbeddedFont", "Aptos_MSFontService", Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);" class="elementToProof"> <br> </div> <div style="font-family: Aptos, "Aptos_EmbeddedFont", "Aptos_MSFontService", Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);" class="elementToProof"> But now the points where i am missing understanding:</div> <ol data-editing-info="{"applyListStyleFromLevel":false,"orderedStyleType":1}" style="margin-top: 0px; margin-bottom: 0px; list-style-type: decimal;" start="1"> <li style="font-family: Aptos, "Aptos_EmbeddedFont", "Aptos_MSFontService", Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);"> <div role="presentation" class="elementToProof">imx-drm_dri is only a stub which should trigger etnaviv_dri via KMSRO ?</div> </li><li style="font-family: Aptos, "Aptos_EmbeddedFont", "Aptos_MSFontService", Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);"> <div role="presentation" class="elementToProof">Somehow a dmabuf with GBM is shared between etnaviv_dri (/dev/dri/renderD128) and imx-drm_dri stub (/dev/dri/card1) which is called PRIME ?</div> </li><li style="font-family: Aptos, "Aptos_EmbeddedFont", "Aptos_MSFontService", Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);"> <div role="presentation" class="elementToProof">Which mesa compile options i do really need for getting this setup working, am i missing some ?</div> </li><li style="font-family: Aptos, "Aptos_EmbeddedFont", "Aptos_MSFontService", Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);"> <div role="presentation" class="elementToProof">What is a really useful test program, how can i debug further ?</div> </li><li style="font-family: Aptos, "Aptos_EmbeddedFont", "Aptos_MSFontService", Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);"> <div role="presentation" class="elementToProof">Do i miss a kernel config option ?</div> </li></ol> <div style="font-family: Aptos, "Aptos_EmbeddedFont", "Aptos_MSFontService", Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);" class="elementToProof"> <br> </div> <div style="font-family: Aptos, "Aptos_EmbeddedFont", "Aptos_MSFontService", Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);" class="elementToProof"> Thank you already very much for your help in advance.</div> <div style="font-family: Aptos, "Aptos_EmbeddedFont", "Aptos_MSFontService", Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);" class="elementToProof"> <br> </div> <div style="font-family: Aptos, "Aptos_EmbeddedFont", "Aptos_MSFontService", Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);" class="elementToProof"> Greetings,</div> <div style="font-family: Aptos, "Aptos_EmbeddedFont", "Aptos_MSFontService", Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);" class="elementToProof"> André</div> <div style="font-family: Aptos, "Aptos_EmbeddedFont", "Aptos_MSFontService", Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);" class="elementToProof"> <br> </div> <div style="font-family: Aptos, "Aptos_EmbeddedFont", "Aptos_MSFontService", Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);" class="elementToProof"> <br> </div> <div style="font-family: Aptos, "Aptos_EmbeddedFont", "Aptos_MSFontService", Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);" class="elementToProof"> <br> </div> <div style="font-family: Aptos, "Aptos_EmbeddedFont", "Aptos_MSFontService", Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);" class="elementToProof"> <br> </div> <div style="font-family: Aptos, "Aptos_EmbeddedFont", "Aptos_MSFontService", Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);" class="elementToProof"> <br> </div> <ol data-editing-info="{"applyListStyleFromLevel":false,"unorderedStyleType":2,"orderedStyleType":1}" style="margin-top: 0px; margin-bottom: 0px; list-style-type: decimal;" start="20"> <li style="font-family: Aptos, "Aptos_EmbeddedFont", "Aptos_MSFontService", Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0); display: block;"> <div role="presentation" class="elementToProof"><br> </div> </li></ol> <div style="font-family: Aptos, "Aptos_EmbeddedFont", "Aptos_MSFontService", Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);" class="elementToProof"> <br> </div> <div style="font-family: Aptos, "Aptos_EmbeddedFont", "Aptos_MSFontService", Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);" class="elementToProof"> <br> </div> <div style="font-family: Aptos, "Aptos_EmbeddedFont", "Aptos_MSFontService", Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);" class="elementToProof"> <br> </div> <a href="https://www.richard-wolf.com/de/unternehmen/kongresse/messe-detail/77-kongress-der-deutschen-gesellschaft-fuer-urologie-dgu" title=""><img src="https://www.richard-wolf.com/mam/data/Typo3/banner/e-mail-banner-DGU25.png"></a><a href="https://www.richard-wolf.com/de/academy-prima-vista/masterclass-workshops/masterclass-workshop-minimally-invasive-upper-gi-surgery-2" title=""></a><a href="https://www.richard-wolf.com/en/company/congresses/congress-detail/arab-health-2025" title=""></a> <p style="margin-bottom: 1pt;"><span style="font-size:8.0pt;font-family:"Arial",sans-serif;color:black">Richard Wolf GmbH, Pforzheimer Strasse 32, 75438 Knittlingen<br> Managing Directors: Juergen Pfab, Juergen Steinbeck. 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