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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - [i965 cherryview] Modesetting does not support framebuffers greater then 4096x4096"
href="https://bugs.freedesktop.org/show_bug.cgi?id=101929">101929</a>
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<th>Summary</th>
<td>[i965 cherryview] Modesetting does not support framebuffers greater then 4096x4096
</td>
</tr>
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<th>Product</th>
<td>Mesa
</td>
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<th>Version</th>
<td>17.1
</td>
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<th>Hardware</th>
<td>Other
</td>
</tr>
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<th>OS</th>
<td>All
</td>
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>normal
</td>
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<th>Priority</th>
<td>medium
</td>
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<th>Component</th>
<td>Drivers/DRI/i965
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<th>Assignee</th>
<td>intel-3d-bugs@lists.freedesktop.org
</td>
</tr>
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<th>Reporter</th>
<td>jan.burgmeier@unicon-software.com
</td>
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<th>QA Contact</th>
<td>intel-3d-bugs@lists.freedesktop.org
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</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=132989" name="attach_132989" title="lspci -vv">attachment 132989</a> <a href="attachment.cgi?id=132989&action=edit" title="lspci -vv">[details]</a></span>
lspci -vv
Hello,
if I try to use a resolution greater then 4096 in either direction the displays
stay black and the kernel logs:
[drm:drm_ioctl [drm]] pid=1986, dev=0xe200, auth=1, DRM_IOCTL_MODE_ADDFB
[drm:intel_framebuffer_init [i915]] tiled pitch (23040) must be at less than
16384
[drm:drm_internal_framebuffer_create [drm]] could not create framebuffer
[drm:drm_ioctl [drm]] ret = -22
>From the error message I assume that the stride is somehow wrong so I filled
the bug against mesa because the stride is calculated by mesa's
"brw_bo_alloc_tiled".
The maximum allowed stride is set in the kernel and is hardware dependent so
this may only occur on cherryview.
xrandr with modesetting says the maximum framebuffer is 8192x8192 and when
using the intel driver and SNA acceleration it is working. So the hardware
should support a greater resolution.
System spec:
Kernel: 4.9.30 32Bit
Mesa: 17.1.1
libdrm: 2.4.81
Xorg: 1.19.3
Best regards
Jan Burgmeier</pre>
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