| Summary: | transformed fb may leave the scanout blank | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Product: | xorg | Reporter: | kobeqin <kobe.qin> | ||||||
| Component: | Driver/intel | Assignee: | Chris Wilson <chris> | ||||||
| Status: | VERIFIED FIXED | QA Contact: | Intel GFX Bugs mailing list <intel-gfx-bugs> | ||||||
| Severity: | critical | ||||||||
| Priority: | high | CC: | cancan.feng, guang.a.yang, james.ausmus, kobe.qin, yangweix.shui | ||||||
| Version: | unspecified | ||||||||
| Hardware: | Other | ||||||||
| OS: | Linux (All) | ||||||||
| Whiteboard: | |||||||||
| i915 platform: | i915 features: | ||||||||
| Attachments: |
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Created attachment 83814 [details]
Xorg.0.log
any developer can reproduce this? On -latest nightly: Screen will blackscreen after panel scaling via xrandr at the first time. xrandr --output VGA1 --scale 10x10 I tried rotate, it works good. That would be a 19200x10800 framebuffer. :) How much memory do you have on your byt-m? I have 2GiB, and using a 19200x10800 I hit an allocation failure when downsampling to the scanout, hence fill the output with black. (In reply to comment #5) > How much memory do you have on your byt-m? I have 2GiB, and using a > 19200x10800 I hit an allocation failure when downsampling to the scanout, > hence fill the output with black. Our machine use mode 16800x10500: ---------------------- VGA1 connected 16800x10500+0+0 (normal left inverted right x axis y axis) 474mm x 296mm 1680x1050 60.0*+ 1280x1024 75.0 60.0 1152x864 75.0 1024x768 75.1 60.0 machine boot up memory info: ----------------------- [root@x-byt04 ~]# cat /proc/meminfo MemTotal: 1910716 kB MemFree: 1686332 kB Buffers: 25112 kB Cached: 116548 kB The memory of our byt-m is also 2GiB. After running one time "xrandr --output VGA1 --scale 10x10": ----------------------- [root@x-byt04 ~]# cat /proc/meminfo MemTotal: 1910716 kB MemFree: 974536 kB Buffers: 25180 kB Cached: 820776 kB ..... ..... running "xrandr --output VGA1 --scale 10x10" for the second time, meminfo have no changes. I've pushed a series of patches to harden our allocation and handling of very large framebuffers and I am able to start firefox at 19200x10800 despite the system continually reporting ENOMEM/ENOSPC - though eventually we do hit an untrapped signal and die. Yangwei, please verify on behalf of Kobe. Retesting with latest -nightly kernel, this bug is gone. I tried many times scale setting and rotation, the Baytrail machine can work properly. Verified here. |
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Created attachment 83813 [details] dmesg for crandr_scale(drm.debug=6) Description, Blackscreen will occur after panel scaling via xrandr at the second time. Try to rotate, blackscreen also will occur at the second time. Reproduced steps, 1. Boot up system with VGA connected 2. $xinit & 3. $xrandr --output VGA1 --scale 5x5 4. $xrandr --output VGA1 --scale 10x10 Or 3. $xrandr --output VGA1 --rotate left 4. $xrandr --output VGA1 --rotate inverted Test Environment, Platform: Baytrail-M 00:00.0 Host bridge [0600]: Intel Corporation ValleyView SSA-CUnit [8086:0f00] (rev 06) 00:02.0 VGA compatible controller [0300]: Intel Corporation ValleyView Gen7 [8086:0f31] (rev 06) Kernel: 3.11.0rc3_nightlytop_89ff7e_20130807 Libdrm: (master)libdrm-2.4.46-26-g3c967e715528ee52195c178c4d09d03b643f0c06 Mesa: (master)12522041d6e17ac176a8e86c590789bfbbe9def5 Xserver: (master)xorg-server-1.14.99.1-176-gf67d022523c59a27f3bf8791aa9ca6624318b1fd Xf86_video_intel: (master)2.21.14-5-g6004870d53221caf05a330fcfc8a72e68b2b8898 Cairo: (master)46d9db96d460fea72f0420102e8a90c6a7231f79 Libva: (staging)bc49c42bcbfb24286c06b3e7cdb171b2a01c6f80 Libva_intel_driver: (staging)b3afeef8092dc4eb7cb73fce672ddf7a55205f34