<html> <head> <base href="https://bugs.freedesktop.org/" /> </head> <body> <div> <a class="bz_bug_link bz_status_NEEDINFO " title="NEEDINFO --- - [GM965/GL960] blank screen after switching between VGA1 and LVDS1" href="https://bugs.freedesktop.org/show_bug.cgi?id=49688#c42">Comment # 42</a> on <a class="bz_bug_link bz_status_NEEDINFO " title="NEEDINFO --- - [GM965/GL960] blank screen after switching between VGA1 and LVDS1" href="https://bugs.freedesktop.org/show_bug.cgi?id=49688">bug 49688</a> from <a class="email" href="mailto:manikulin@gmail.com" title="max <manikulin@gmail.com>"> max</a> <pre>3.12.0-994-generic #201311210459 SMP Thu Nov 21 10:09:54 UTC 2013 i686 i686 i686 GNU/Linux (ubuntu mainline drm-intel-nightly) [ 3.917667] [drm] initialized overlay support [ 4.085004] fbcon: inteldrmfb (fb0) is primary device [ 4.108135] ------------[ cut here ]------------ [ 4.108208] WARNING: CPU: 0 PID: 204 at /home/apw/COD/linux/drivers/gpu/drm/i 915/intel_panel.c:792 intel_panel_enable_backlight+0xca/0xd0 [i915]() [ 4.108223] Modules linked in: hid_a4tech ahci(+) r8169 libahci i915(+) usbhi d mii i2c_algo_bit hid drm_kms_helper video drm [ 4.108229] CPU: 0 PID: 204 Comm: modprobe Not tainted 3.12.0-994-generic #20 1311210459 [ 4.108230] Hardware name: ASUSTeK Computer Inc. F80L /F80L , BIOS 206 08/06/2008 [ 4.108240] 00000000 00000000 f5d6b884 c1675822 f8af35fc f5d6b8b4 c1056804 c 1876a24 [ 4.108247] 00000000 000000cc f8af35fc 00000318 f8abefda f8abefda f5f29800 f 54f0000 [ 4.108255] f54f13dc f5d6b8c4 c1056842 00000009 00000000 f5d6b8f0 f8abefda 0 0000004 [ 4.108256] Call Trace: [ 4.108266] [<c1675822>] dump_stack+0x41/0x52 [ 4.108273] [<c1056804>] warn_slowpath_common+0x84/0xa0 [ 4.108334] [<f8abefda>] ? intel_panel_enable_backlight+0xca/0xd0 [i915] ... [ 4.109022] [<c113f4ab>] ? vm_mmap_pgoff+0x8b/0xb0 [ 4.109027] [<c168854d>] sysenter_do_call+0x12/0x28 [ 4.109029] ---[ end trace 457ad49306518c8d ]--- [ 4.109031] ------------[ cut here ]------------ [ 4.109067] WARNING: CPU: 0 PID: 204 at /home/apw/COD/linux/drivers/gpu/drm/i915/intel_panel.c:342 intel_panel_compute_brightness+0x6a/0x70 [i915]() [ 4.109074] Modules linked in: hid_a4tech ahci(+) r8169 libahci i915(+) usbhid mii i2c_algo_bit hid drm_kms_helper video drm [ 4.109077] CPU: 0 PID: 204 Comm: modprobe Tainted: G W 3.12.0-994-generic #201311210459 ... [ 4.109932] WARNING: CPU: 0 PID: 204 at /home/apw/COD/linux/drivers/gpu/drm/i915/intel_panel.c:450 i9xx_set_backlight+0xe4/0xf0 [i915]() ... [ 4.110815] WARNING: CPU: 0 PID: 204 at /home/apw/COD/linux/drivers/gpu/drm/i915/intel_display.c:9460 check_crtc_state+0x285/0x360 [i915]() [ 4.110816] pipe state doesn't match! So I did not tested VGA/LVDS switching with this kernel</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the QA Contact for the bug.</li> </ul> </body> </html>