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| author |   Alexander Kanavin <alex.kanavin@gmail.com> | 2023-09-07 12:50:33 +0200 |
|---|---|---|
| committer |   Richard Purdie <richard.purdie@linuxfoundation.org> | 2023-09-09 12:04:06 +0100 |
| commit | acd85925cb197b7a31a25b60e8de762e2c3697ef (patch) | |
| tree | 787c54eddeeb8751080c7c69612c5055517957a7 /scripts | |
| parent | 25fbe4d1dcfa329f0229eb3ed384b8b84583bd45 (diff) | |
| download | openembedded-core-acd85925cb197b7a31a25b60e8de762e2c3697ef.tar.gz | |
runqemu: check permissions of available render nodes as well as their presence
qemu itself is not helpful when render nodes exist, but can't be opened:
qemu-system-x86_64: egl: render node init failed
To fix this, users likely need to
* modprobe vgem (presence when physical graphic card is absent or has a driver without
support for render nodes, such as many older cards found in server machines)
* add their user to "render" group to write to /dev/dri/renderD* (permissions)
With this change runqemu should print hints for the above as appropriate from probing the nodes.
Signed-off-by: Alexander Kanavin <alex@linutronix.de>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Diffstat (limited to 'scripts')
| -rwxr-xr-x | scripts/runqemu | 14 |
1 files changed, 12 insertions, 2 deletions
diff --git a/scripts/runqemu b/scripts/runqemu index 0e105a918b..3a17033268 100755 --- a/scripts/runqemu +++ b/scripts/runqemu @@ -1383,8 +1383,18 @@ to your build configuration. render_hint = """If /dev/dri/renderD* is absent due to lack of suitable GPU, 'modprobe vgem' will create one suitable for mesa llvmpipe software renderer.""" try: content = os.listdir("/dev/dri") - if len([i for i in content if i.startswith('render')]) == 0: - raise RunQemuError("No render nodes found in /dev/dri: %s. %s" %(content, render_hint)) + nodes = [i for i in content if i.startswith('renderD')] + if len(nodes) == 0: + raise RunQemuError("No render nodes found in /dev/dri/: %s. %s" %(content, render_hint)) + for n in nodes: + try: + with open(os.path.join("/dev/dri", n), "w") as f: + f.close() + break + except IOError: + pass + else: + raise RunQemuError("None of the render nodes in /dev/dri/ are accessible: %s; you may need to add yourself to 'render' group or otherwise ensure you have read-write permissions on one of them." %(nodes)) except FileNotFoundError: raise RunQemuError("/dev/dri directory does not exist; no render nodes available on this machine. %s" %(render_hint)) |