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MID_RHS_MATCH_FROM(0.00)[]; RCVD_VIA_SMTP_AUTH(0.00)[]; RECEIVED_SPAMHAUS_BLOCKED_OPENRESOLVER(0.00)[2a07:de40:b281:106:10:150:64:167:received]; DKIM_TRACE(0.00)[suse.de:+]; DBL_BLOCKED_OPENRESOLVER(0.00)[imap1.dmz-prg2.suse.org:rdns,imap1.dmz-prg2.suse.org:helo,suse.de:dkim,suse.de:mid,bootlin.com:url] X-Spam-Score: -4.51 Hi Am 18.09.25 um 04:04 schrieb Nick Bowler: > On Wed, Sep 17, 2025 at 11:14:45AM -0400, Nick Bowler wrote: >> On Fri, Aug 29, 2025 at 03:07:14PM +0200, Thomas Zimmermann wrote: >>> The ast driver doesn't do much during shutdown. Could you please out-comment >>> the lines at either [2] xor [3] and report on either effect? These calls >>> turn of the video chip's memory access and sync pulses. Not doing that might >>> resolve the problem. >>> >>> [2] https://elixir.bootlin.com/linux/v6.16.3/source/drivers/gpu/drm/ast/ast_mode.c#L835 >>> [3] https://elixir.bootlin.com/linux/v6.16.3/source/drivers/gpu/drm/ast/ast_mode.c#L839 >> I can try this. > OK, I tested 6.17-rc6 and reproduced the problem on this version. Then: > > - Deleting [2] (only) appears to make no difference whatsoever. That > is, deleting the following line in ast_mode.c: > > ast_set_index_reg_mask(ast, AST_IO_VGASRI, 0x01, 0xdf, AST_IO_VGASR1_SD); > > - Deleting [3] (only) appears sufficient to make things work again, > that is, deleting the following line in ast_mode.c: > > ast_set_index_reg_mask(ast, AST_IO_VGACRI, 0xb6, 0xfc, vgacrb6); Great, thanks for testing! I'll see if i can make a workaround for your system. Could you please provide me with 'lspci -nvv' of the device? Best regards Thomas > > Thanks, > Nick -- -- Thomas Zimmermann Graphics Driver Developer SUSE Software Solutions Germany GmbH Frankenstrasse 146, 90461 Nuernberg, Germany GF: Ivo Totev, Andrew Myers, Andrew McDonald, Boudien Moerman HRB 36809 (AG Nuernberg)