From mboxrd@z Thu Jan 1 00:00:00 1970 From: bugzilla-daemon@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 Message-ID: Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============1929223352==" Return-path: Received: from culpepper.freedesktop.org (unknown [131.252.210.165]) by gabe.freedesktop.org (Postfix) with ESMTP id 9C2A96E500 for ; Mon, 2 Feb 2015 08:28:01 -0800 (PST) List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" To: dri-devel@lists.freedesktop.org List-Id: dri-devel@lists.freedesktop.org --===============1929223352== Content-Type: multipart/alternative; boundary="1422894481.af5FeEc0.16273"; charset="UTF-8" --1422894481.af5FeEc0.16273 Date: Mon, 2 Feb 2015 16:28:01 +0000 MIME-Version: 1.0 Content-Type: text/plain; charset="UTF-8" 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. -- You are receiving this mail because: You are the assignee for the bug. --1422894481.af5FeEc0.16273 Date: Mon, 2 Feb 2015 16:28:01 +0000 MIME-Version: 1.0 Content-Type: text/html; charset="UTF-8"
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.

You are receiving this mail because:
  • You are the assignee for the bug.
--1422894481.af5FeEc0.16273-- --===============1929223352== Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: base64 Content-Disposition: inline X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KZHJpLWRldmVs IG1haWxpbmcgbGlzdApkcmktZGV2ZWxAbGlzdHMuZnJlZWRlc2t0b3Aub3JnCmh0dHA6Ly9saXN0 cy5mcmVlZGVza3RvcC5vcmcvbWFpbG1hbi9saXN0aW5mby9kcmktZGV2ZWwK --===============1929223352==--