I know what some of those words mean.... :D Welp, I'm currently laid off, so I might have time to do some learning. I'll see what I can find out. :) j On Tuesday, March 31, 2020 4:55:21 PM AKDT Ilia Mirkin wrote: > Sorry, haven't really looked since our initial interaction. That EDID > decodes as: > > Block 0, Base EDID: > EDID Structure Version & Revision: 1.0 > Vendor & Product Identification: > Manufacturer: SEC > Model: 21569 > Made in: 2010 > Basic Display Parameters & Features: > Digital display > Maximum image size: 34 cm x 19 cm > Gamma: 2.20 > RGB color display > First detailed timing is preferred timing > Color Characteristics: > Red : 0.6201, 0.3398 > Green: 0.3300, 0.5703 > Blue : 0.1503, 0.0595 > White: 0.3134, 0.3291 > Established Timings I & II: none > Standard Timings: none > Detailed Timing Descriptors: > DTD 1: 1366x768 60.003 Hz 683:384 47.402 kHz 75.180 MHz (344 > mm x 194 mm) > Hfront 48 Hsync 32 Hback 140 Hpol P > Vfront 2 Vsync 5 Vback 15 Vpol N > DTD 2: 1366x768 39.999 Hz 683:384 31.599 kHz 48.220 MHz (344 > mm x 194 mm) > Hfront 48 Hsync 32 Hback 80 Hpol P > Vfront 2 Vsync 5 Vback 15 Vpol N > Alphanumeric Data String: 'T892T' > Manufacturer-Specified Display Descriptor (0x00): 00 00 00 00 41 > 01 19 00 00 00 00 09 01 0a 20 20 '....A......... ' > Checksum: 0x4 > > ---------------- > > edid-decode SHA: 9bdf55523f83072f5c056953f1fbc9fcf09d9496 > > Warnings: > > Block 0, Base EDID: > EDID Structure Version & Revision: EDID 1.0 is deprecated, do not use. > > Failures: > > Block 0, Base EDID: > Basic Display Parameters & Features: Digital Video Interface > Standard set to reserved value 0x15. > Display Descriptor #3: Has descriptor blocks other than detailed timings. > Alphanumeric Data String: Non-printable character. > Display Descriptor #4: Has descriptor blocks other than detailed timings. > > > > and in your logs you have > > [ 289.906506] nouveau 0000:01:00.0: disp: outp 00:0006:0344: data > 281925 KB/s link 0 KB/s mst 0->0 > [ 289.906511] nouveau 0000:01:00.0: disp: outp 00:0006:0344: link > requirements changed > > Where completely coincidentally, > > 75180 * 30 / 8 = 281925 > > So it's clearly wanting 10bpc. And based on my reading of the logic in > drm_edid.c, your display_info.bpc with that edid would == 0. However > in nouveau_connector_detect_depth() we would then force it to 6. And > in nv50_mstc_get_modes it'd become 8. So this is still a bit unclear > to me. > > If you're up to it, do some tracing, try to figure out why it's > deciding to do 10bpc. > > Cheers, > > -ilia > > On Tue, Mar 31, 2020 at 8:37 PM Joshua J. Kugler <joshua@xxxxxxxxxxx> wrote: > > Just curious if any of the recent fixes have addressed this. :) > > > > j > > > > On Tuesday, January 14, 2020 1:05:28 PM AKDT Joshua J. Kugler wrote: > > > Another log, per Lyude on #nouveau. > > > > > > j > > > > > > On Tuesday, January 14, 2020 8:52:51 AM AKST Joshua J. Kugler wrote: > > > > Here we go! > > > > > > > > j > > > > > > > > On Tuesday, January 14, 2020 7:08:20 AM AKST Ilia Mirkin wrote: > > > > > Hi Joshua, > > > > > > > > > > Not a fix for your issue, but Ben noticed this (and fixed it): > > > > > > > > > > https://github.com/skeggsb/nouveau/commit/024bda7d2b0c3b0731433d60a4 > > > > > 94c7 > > > > > 8a > > > > > b5 8cb216 > > > > > > > > > > which is what causes us to even try 540MB/s link training. However > > > > > with this fix applied, it'll just give up faster. I'm told eDP is > > > > > generally a single lane, and you're trying to get more than 270MB/s. > > > > > So ... the question is ... why is it trying to do 10bpc. One likely > > > > > reason is that the display_info.bpc == 0 for some reason (and we, > > > > > rather questionably, default to 10bpc for bandwidth determination). > > > > > There's no concrete theory as to what that reason might be, but it > > > > > would explain what's going on. > > > > > > > > > > After resuming into a bad state, can you grab the contents of > > > > > /sys/class/drm/card0-eDP-1/edid (you'll have to cat it or > > > > > something)? > > > > > My hope is that it's somehow messed up. > > > > > > > > > > Also, can you add "drm.debug=0x1e" to the boot cmd line, in addition > > > > > to the bits you have already? Should provide some more info, perhaps > > > > > some of it will even be relevant. > > > > > > > > > > Thanks, > > > > > > > > > > -ilia > > > > > > > > > > On Mon, Jan 13, 2020 at 6:48 PM Joshua J. Kugler > > > > > <joshua@xxxxxxxxxxx> > > > > > > wrote: > > > > > > I've added debugging command-line parameters to the kernel command > > > > > > line, > > > > > > per skeggsb and imirkin on #nouveau. > > > > > > > > > > > > root@joyful:~# cat /proc/cmdline > > > > > > BOOT_IMAGE=/vmlinuz-5.3.0-26-generic > > > > > > root=/dev/mapper/vgubuntu-root ro > > > > > > quiet splash log_buf_len=8M > > > > > > nouveau.debug=disp=trace,bios=trace,i2c=trace > > > > > > 3 > > > > > > > > > > > > On this particular run, closing the lid and then opening got me > > > > > > back > > > > > > to > > > > > > the > > > > > > console, but then I tried running > > > > > > > > > > > > echo mem > /sys/power/state > > > > > > > > > > > > and it did not recover from that. That is, the laptop is awake, I > > > > > > can > > > > > > ssh > > > > > > in, screen back-light is on; black screen. > > > > > > > > > > > > j > > > > > > > > > > > > On Sunday, January 12, 2020 2:02:00 PM AKST Joshua J. Kugler wrote: > > > > > > > Howdy! I've been doing a lot of troubleshooting, and haven't > > > > > > > arrived > > > > > > > at > > > > > > > a > > > > > > > solution yet. > > > > > > > > > > > > > > Kernel log attached. VBIOS also attached. > > > > > > > Ubuntu 19.10 > > > > > > > > > > > > > > $ uname -a > > > > > > > Linux joyful 5.3.0-26-generic #28-Ubuntu SMP Wed Dec 18 05:37:46 > > > > > > > UTC > > > > > > > 2019 > > > > > > > x86_64 x86_64 x86_64 GNU/Linux > > > > > > > $ dpkg -l|grep nouveau > > > > > > > ii libdrm-nouveau2:amd64 2.4.99-1ubuntu1 > > > > > > > amd64 Userspace interface to nouveau-specific kernel DRM > > > > > > > services > > > > > > > -- > > > > > > > runtime > > > > > > > ii xserver-xorg-video-nouveau 1:1.0.16-1 > > > > > > > amd64 X.Org X server -- Nouveau display driver > > > > > > > $ lspci |grep VGA > > > > > > > 01:00.0 VGA compatible controller: NVIDIA Corporation GT218M > > > > > > > [NVS > > > > > > > 3100M] > > > > > > > (rev a2) > > > > > > > > > > > > > > This is a Dell Latitude E6510, so not exactly bleeding edge. :) > > > > > > > > > > > > > > The system boots just fine, and I can use the laptop without > > > > > > > issue. > > > > > > > Goes > > > > > > > to > > > > > > > sleep just fine. When I resume from sleep, the display is black, > > > > > > > and > > > > > > > will > > > > > > > not come to life (the back light is on, though). I can ssh in, > > > > > > > and > > > > > > > run > > > > > > > all > > > > > > > kinds of commands; restart the display manager does *not* bring > > > > > > > it > > > > > > > back > > > > > > > to > > > > > > > life. > > > > > > > > > > > > > > Any tips would be greatly appreciated. > > > > > > > > > > > > > > j > > > > > > > > > > > > -- > > > > > > Joshua J. Kugler - Fairbanks, Alaska - joshua@xxxxxxxxxxx > > > > > > Azariah Enterprises - Programming and Website Design > > > > > > PGP Key: http://pgp.mit.edu/ ID > > > > > > 0x68108cbb73b13b6a_______________________________________________ > > > > > > Nouveau > > > > > > mailing list > > > > > > Nouveau@xxxxxxxxxxxxxxxxxxxxx > > > > > > https://lists.freedesktop.org/mailman/listinfo/nouveau > > > > -- > > Joshua J. Kugler - Fairbanks, Alaska - joshua@xxxxxxxxxxx > > Azariah Enterprises - Programming and Website Design > > PGP Key: http://pgp.mit.edu/ ID 0x68108cbb73b13b6a > > > > > > _______________________________________________ > > Nouveau mailing list > > Nouveau@xxxxxxxxxxxxxxxxxxxxx > > https://lists.freedesktop.org/mailman/listinfo/nouveau > > _______________________________________________ > Nouveau mailing list > Nouveau@xxxxxxxxxxxxxxxxxxxxx > https://lists.freedesktop.org/mailman/listinfo/nouveau -- Joshua J. Kugler - Fairbanks, Alaska - joshua@xxxxxxxxxxx Azariah Enterprises - Programming and Website Design PGP Key: http://pgp.mit.edu/ ID 0x68108cbb73b13b6a _______________________________________________ Nouveau mailing list Nouveau@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/nouveau
