From: bugzilla-daemon@freedesktop.org
To: dri-devel@lists.freedesktop.org
Subject: [Bug 88921] X fails to start on QEMU/KVM with cirrus KMS since 3.19-rc
Date: Mon, 02 Feb 2015 16:28:01 +0000 [thread overview]
Message-ID: <bug-88921-502@http.bugs.freedesktop.org/> (raw)
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https://bugs.freedesktop.org/show_bug.cgi?id=88921
Bug ID: 88921
Summary: X fails to start on QEMU/KVM with cirrus KMS since
3.19-rc
Product: DRI
Version: unspecified
Hardware: Other
OS: All
Status: NEW
Severity: normal
Priority: medium
Component: DRM/other
Assignee: dri-devel@lists.freedesktop.org
Reporter: tiwai@suse.de
X modesetting driver fails to start with cirrus KMS on QEMU/KVM since 3.19-rc.
The culprit is the commit 8975626ea35adcca561f8a81dedccfbc5dd8ec72
drm/cirrus: allow 32bpp framebuffers for cirrus drm
Reverting this commit makes X working again.
X modesetting driver seems to try to open 1024x768x32 graphics, where the pitch
is 4096 and greater than max_pitch (4088) defined in
cirrus_check_framebuffer().
And it doesn't fall back to 24bpp as the patch expected.
Tested with 3.19-rc7 with qemu 2.1 -vga cirrus option.
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next reply other threads:[~2015-02-02 16:28 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-02-02 16:28 bugzilla-daemon [this message]
2019-10-14 13:20 ` [Bug 88921] X fails to start on QEMU/KVM with cirrus KMS since 3.19-rc bugzilla-daemon
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