Created attachment 123763 [details] dmesg output + /sys/class/drm/card0/error Happens on Linux 4.6 + Debian Stretch on Asus T100HA when running glmatrix. dmesg output + /sys/class/drm/card0/error attached.
Hang is not happening batch but rather looking at dmesg, we have multiple backtraces (taking the two last ones and where we have some mismatch error in crtc_clock and then port_clock): [ 346.032297] ------------[ cut here ]------------ [ 346.032305] WARNING: CPU: 2 PID: 1835 at drivers/gpu/drm/i915/intel_sideband.c:187 0xffffffff815bcd61 [ 346.032310] DPIO read pipe A reg 0x800c == 0xffffffff [ 346.032317] CPU: 2 PID: 1835 Comm: Xorg Tainted: G W 4.6.0 #1 [ 346.032322] Hardware name: ASUSTeK COMPUTER INC. T100HAN/T100HAN, BIOS T100HAN.216 12/31/2015 [ 346.032325] 0000000000000000 ffffffff814136eb ffff88017abbfb20 0000000000000000 [ 346.032337] ffffffff811052c3 0000000000000000 ffff88017abbfb70 0000000000000000 [ 346.032346] ffff88017a630000 00000000ffffffff ffff88017a630000 ffffffff8110532c [ 346.032355] Call Trace: [ 346.032359] [<ffffffff814136eb>] ? 0xffffffff814136eb [ 346.032363] [<ffffffff811052c3>] ? 0xffffffff811052c3 [ 346.032368] [<ffffffff8110532c>] ? 0xffffffff8110532c [ 346.032372] [<ffffffff815bcd61>] ? 0xffffffff815bcd61 [ 346.032377] [<ffffffff815a3ddc>] ? 0xffffffff815a3ddc [ 346.032382] [<ffffffff815aacb5>] ? 0xffffffff815aacb5 [ 346.032387] [<ffffffff815350b3>] ? 0xffffffff815350b3 [ 346.032392] [<ffffffff81139f10>] ? 0xffffffff81139f10 [ 346.032396] [<ffffffff81511d68>] ? 0xffffffff81511d68 [ 346.032399] [<ffffffff81524a20>] ? 0xffffffff81524a20 [ 346.032403] [<ffffffff815250ae>] ? 0xffffffff815250ae [ 346.032407] [<ffffffff8151b522>] ? 0xffffffff8151b522 [ 346.032410] [<ffffffff81524d00>] ? 0xffffffff81524d00 [ 346.032414] [<ffffffff811e34d0>] ? 0xffffffff811e34d0 [ 346.032418] [<ffffffff811f44ea>] ? 0xffffffff811f44ea [ 346.032421] [<ffffffff8110fb01>] ? 0xffffffff8110fb01 [ 346.032425] [<ffffffff8110fb01>] ? 0xffffffff8110fb01 [ 346.032428] [<ffffffff81110149>] ? 0xffffffff81110149 [ 346.032432] [<ffffffff811f4a77>] ? 0xffffffff811f4a77 [ 346.032436] [<ffffffff810014b0>] ? 0xffffffff810014b0 [ 346.032439] [<ffffffff81b6963c>] ? 0xffffffff81b6963c [ 346.032443] ---[ end trace 5fb9bd80e9db50a2 ]--- [ 346.036520] [drm:0xffffffff815a0803] *ERROR* mismatch in base.adjusted_mode.crtc_clock (expected 75000, found 18750) [ 346.036530] [drm:0xffffffff815a08ed] *ERROR* mismatch in port_clock (expected 75000, found 18750) [ 346.036534] ------------[ cut here ]------------ [ 346.036540] WARNING: CPU: 2 PID: 1835 at drivers/gpu/drm/i915/intel_display.c:12912 0xffffffff815ab3e8 [ 346.036542] pipe state doesn't match! [ 346.036548] CPU: 2 PID: 1835 Comm: Xorg Tainted: G W 4.6.0 #1 [ 346.036552] Hardware name: ASUSTeK COMPUTER INC. T100HAN/T100HAN, BIOS T100HAN.216 12/31/2015 [ 346.036555] 0000000000000000 ffffffff814136eb ffff88017abbfbc0 0000000000000000 [ 346.036564] ffffffff811052c3 ffff880179e27000 ffff88017abbfc10 0000000000000000 [ 346.036572] ffff880179e74800 ffff88017a683b78 ffff880179f97400 ffffffff8110532c [ 346.036580] Call Trace: [ 346.036585] [<ffffffff814136eb>] ? 0xffffffff814136eb [ 346.036588] [<ffffffff811052c3>] ? 0xffffffff811052c3 [ 346.036592] [<ffffffff8110532c>] ? 0xffffffff8110532c [ 346.036596] [<ffffffff815ab3e8>] ? 0xffffffff815ab3e8 [ 346.036600] [<ffffffff815350b3>] ? 0xffffffff815350b3 [ 346.036603] [<ffffffff81139f10>] ? 0xffffffff81139f10 [ 346.036607] [<ffffffff81511d68>] ? 0xffffffff81511d68 [ 346.036610] [<ffffffff81524a20>] ? 0xffffffff81524a20 [ 346.036614] [<ffffffff815250ae>] ? 0xffffffff815250ae [ 346.036618] [<ffffffff8151b522>] ? 0xffffffff8151b522 [ 346.036622] [<ffffffff81524d00>] ? 0xffffffff81524d00 [ 346.036625] [<ffffffff811e34d0>] ? 0xffffffff811e34d0 [ 346.036629] [<ffffffff811f44ea>] ? 0xffffffff811f44ea [ 346.036633] [<ffffffff8110fb01>] ? 0xffffffff8110fb01 [ 346.036636] [<ffffffff8110fb01>] ? 0xffffffff8110fb01 [ 346.036640] [<ffffffff81110149>] ? 0xffffffff81110149 [ 346.036643] [<ffffffff811f4a77>] ? 0xffffffff811f4a77 [ 346.036647] [<ffffffff810014b0>] ? 0xffffffff810014b0 [ 346.036651] [<ffffffff81b6963c>] ? 0xffffffff81b6963c [ 346.036656] ---[ end trace 5fb9bd80e9db50a3 ]---
1506@spmblk.com - sorry about this second delay until getting back to you. Is this problem still valid with the latest kernel (preferable from drm-tip) ?
Assuming to be duplicate (bsw + skl)... *** This bug has been marked as a duplicate of bug 97177 ***
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