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/024bda7d2b0c3b0731433d60a494c78ab5 > 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
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